Pls Help with this question.

Pls Help With This Question.

Answers

Answer 1

Step-by-step explanation:

16x²-1 = (4x-1)(4x+1)

4x²-9 = (2x+3)(2x-3)

16x²-4 = 4(2x+1)(2x-1)

4x²-1 = (2x+1)(2x-1)

16x²+1 = (4x+i)(4x-i)


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Question 7
O 500
An ice cream factory makes 200 quarts of ice cream in 10 hours. How many quarts could be made
in 36 hours?
O 720
360
9
620

Answers

The ice cream factory could make 720 quarts of ice cream in 36 hours.

How many quarts could be made in 36 hours?

We can use a proportion to solve this problem:

quarts / hours = constant rate of production

Let x be the number of quarts that could be made in 36 hours. Then we have:

200 quarts / 10 hours = x quarts / 36 hours

Cross-multiplying, we get:

10x = 200 * 36

Simplifying, we get:

10x = 7200

Dividing both sides by 10, we get:

x = 720

Therefore, the ice cream factory could make 720 quarts of ice cream in 36 hours.

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pls explain how to do this math and answer it pls

Answers

Answer: A.

Step-by-step explanation: It is parallel because of the angles that are the same and if u fill all the angles up angles 2 and 6 will be congruent there fore its parallel

Answer:

A. Yes, because angles 2 and 6 are congruent.

Step-by-step explanation:

The lines arent touching, parallel. Angles 2 and 6 share the same angle, congruent.

Question 1
Find the future value twenty-five years from now of an account in which you have $19,675.13 today and into which you make annual $3,000 deposits. Assume the account earns 9.25%.

Answers

The future value of the account after 25 years is $210,595.95.

To find the future value of the account

We can use the formula for future value of an annuity:

FV = P * (1 + r)^n + PMT * ((1 + r)^n - 1) / r

Where

P is the initial investmentr is the annual interest rate n is the number of years PMT is the annual payment

Substituting the given values, we get:

FV = 19675.13 * (1 + 0.0925)^25 + 3000 * ((1 + 0.0925)^25 - 1) / 0.0925

Simplifying and evaluating, we get:

FV = $210,595.95

Therefore, the future value of the account after 25 years is $210,595.95.

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A basketball player was successful on 18 out of his 24 last free throws attempts. If he attempts 20 free- throws in the next game, about how many will he make if the ratio is the same as the first game?

Answers

He needs to make 15 throws if the ratio is the same as the first game


Calculating how many will he make if the ratio is the same as the first game?

From the question, we have the following parameters that can be used in our computation:

Player was successful on 18 out of his 24 last free throws attempts

Using the above as a guide, we have the following:

Proportion = 18/24

For the number of games, we have

Throws made = Proportion  * Number of throws

Substitute the known values in the above equation, so, we have the following representation

Throws made = 18/24 * 20

Evaluate

Throws made = 15

Hence, the number of throws made is 15

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a random sample of 20 gas stations was selected to estimate the gas prices in the us and had an average of $3.40 and a standard deviation of$0.22. test at a 10% alpha level if the true average price is under $3.50. what type of error could have occurred? and what are the chances of that happening?

Answers

If a random sample of 20 gas stations was selected to estimate the gas prices. The type of error that could have occurred is a type I error, which is the rejection of a true null hypothesis. The probability of making a type I error is equal to the level of significance (α), which is 10% in this case. So, there is a 10% chance of making a type I error in this test.

What type of error could have occurred?

To test if the true average gas price is under $3.50, we can use a one-tailed t-test with a null hypothesis of:

H0: μ >= $3.50

And an alternative hypothesis of:

Ha: μ < $3.50

where μ is the true population mean gas price.

Using a t-test with a sample size of 20, we can calculate the t-value as:

t = (x -bar - μ) / (s / sqrt(n))

where x-bar is the sample mean, μ is the hypothesized population mean, s is the sample standard deviation, and n is the sample size.

Plugging in the given values, we get:

t = (3.40 - 3.50) / (0.22 / sqrt(20))

t = -2.03

Looking up the t-distribution table with degrees of freedom (df) = 19 and a 10% alpha level (α = 0.10), we find the critical t-value as -1.325.

Since our calculated t-value (-2.03) is less than the critical t-value (-1.325), we reject the null hypothesis in favor of the alternative hypothesis. Therefore, we can conclude that there is sufficient evidence to suggest that the true average gas price is under $3.50.

The type of error that could have occurred is a Type I error, which is rejecting a true null hypothesis. In this case, it means that we conclude that the true average gas price is under $3.50 when it's actually not. The probability of making a Type I error is equal to the alpha level, which is 10% in this case. So there's a 10% chance that we falsely reject the null hypothesis.

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Each serving of a certain fruit snack contains 90 calories.

Han wants to know how many calories he gets from the fruit snacks. Write an equation that shows the number of calories,

c , in terms of the number of servings,

n

Answers

The  equation that shows the number of calories, c, in terms of the number servings, n  where Han wants to know how many calories he gets from the fruit snacks is  c = 90n.

How can the equation be completed?

Based on the provided information from the question, whereby Han wants to know how many calories he gets from the fruit snacks,  and was able to find the multilication of  number of servings, n, with calories per serving.

Therfore, we  can write the equation  as c = 90n since it is about the multiplication of the variables.

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complete question;

Each serving of a certain fruit snack contains 90 calories. Han wants to know how many calories he gets from the fruit snacks. Write an equation that shows the number of calories, c, in terms of the number servings, n. Complete the equation below c=______ Use n as your variable.

Identify the side lengths of the following triangle.

Answers

The side lengths of the triangle are CA = 42.0 and BC = 36.4

Identifying the side lengths of the triangle.

From the question, we have the following parameters that can be used in our computation:

The triangle

Using the tangent rratio, we have

tan(60) = BC/21

So, we have

BC = 21 * tan(60)

Evaluate

BC = 36.4

Next, we have

CA = √[36.4^2 + 21^2] -- pythagoras theorem

Evaluate

CA = 42.0

Hence, the side lengths are CA = 42.0 and BC = 36.4

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1. (07.01 MC) Masha solved an equation, as shown below: Step 1: 8x = 64 Step 2: x= 64 – 8 Step 3: x = 76 Part A: Is Masha's solution correct or incorrect? If the solution is incorrect, explain why it is incorrect and show the correct steps to solve the equation. (6 points) Part B: How many solutions does this equation have? (4 points)​

Answers

(1) The right solution of given equation is  8.(2)The equation 8x = 64 has only one solution

What is an Equation means ?

The definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.

Part A: Masha's solution is incorrect.

In Step 2, Instead of dividing 64/8 she did mistake she subtract 64 by 8

So, the correct step to solving this equation is

8x = 64

x = 64/8

x=8

Hence the right solution of given equation is  8

Part B: The equation 8x = 64 has only one solution, which is x = 8. This is because there is only one value of x that satisfies the equation.

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(1) The right solution of given equation is 8.

(2)The equation 8x = 64 has only one solution

What is an Equation means ?

The definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.

Part A: Masha's solution is incorrect.

In Step 2, Instead of dividing 64/8 she did mistake she subtract 64 by 8

So, the correct step to solving this equation is

8x = 64

x = 64/8

x=8

Hence the right solution of given equation is 8

Part B: The equation 8x = 64 has only one solution, which is x = 8. This is because there is only one value of x that satisfies the equation.

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HELP!!!! I WILL GIVE YOU BRAINIEST

Answers

Answer:  

Distant with current is 30, distance against current is 24.

Rate with current is 6, rate against current is 4.

Time with current is 8 hours, time against current is 14

Step-by-step explanation:  

2nd question answer: 24 - 6x = 8.

What is ¨the area of a parking lot¨ unit of measurement
A - Square meters
B - Yards
C - Cubic inches
D - Cubic feet
E - Square centimeters

Answers

Square meters
The area of a parking should be measured as square meters

At the store, Jami buys a soda for $1.89, a candy bar for $1.78 and a sandwich for $4.98. How much money does she spend at the store?

Answers

1.89+1.78+4.98=8.65
So Jami spends $8.65 at the store

$1,328 + $30x > $1,538 solve for x

Answers

Answer:

Greater than 7.

Step-by-step explanation:

To solve for x in the inequality, we need to isolate x on one side of the equation. First, we need to subtract

$ [tex]\large \boxed{\mathrm{1328}}[/tex]

from each side, giving $30x > $210. Then, we divide both sides by 30 to find that x > 7. Therefore, to make the inequality true, x needs to be greater than 7.

Can someone show me step by step of how to do this please and correctly
What is the area of the circle? Approximate using pi equals 22 over 7 and round to the nearest square yard.

a circle with radius labeled 18 yards

57 square yards

113 square yards

1,018 square yards

2,037 square yards

Points earned on this question: 0

Answers

Sure! To find the area of a circle, you can use the formula A=πr², where A is the area of the circle, and r is the radius of the circle.

In this case, the radius is 18 yards, so we can plug it into the formula:

A = πr²
A = (22/7)(18²)
A = (22/7)(324)
A = 1017.71 square yards

To round to the nearest square yard, we look at the hundredths place. Since it is 0.71, which is greater than 0.5, we round up to 1018 square yards.

Therefore, the area of the circle is approximately 1018 square yards.

If the luminosity of a lightbulb is 100 W and the brightness is measured to be 0.01 what is the distance to the lightbulb?

Answers

The brightness of a light source decreases as the distance from the source increases. This relationship is described by the inverse square law, which states that the brightness of a light source is inversely proportional to the square of the distance from the source.

If the luminosity of a lightbulb is 100 W and the brightness is measured to be 0.01, then we can use the inverse square law to calculate the distance to the lightbulb.

The inverse square law can be expressed as:

B = L/(4πd^2)

where B is the brightness, L is the luminosity, and d is the distance.

Plugging in the given values, we get:

0.01 = 100/(4πd^2)

Solving for d, we get:

d = √(100/(4π*0.01))

d ≈ 15.9 meters

Therefore, the distance to the lightbulb is approximately 15.9 meters.

what is the equation in point slope form equation for line (-3,5) and (1,-1)

Answers

Considering the expression of a line, the equation of the line that passes through the pair of points (-3,5) and (1,-1) is y=-1.5x +0.5.

Definition of linear equation

A linear equation o line can be expressed in the form y = mx + b

where

x and y are coordinates of a point.m is the slope.b is the ordinate to the origin.

Knowing two points (x₁, y₁) and (x₂, y₂) of a line, the slope of the line can be calculated using:

m= (y₂ - y₁)÷ (x₂ - x₁)

Substituting the value of the slope and the value of one of the points, the value of the ordinate to the origin can be obtained.

Equation in this case

In this case, being (x₁, y₁)= (-3, 5) and (x₂, y₂)= (1, -1), the slope m can be calculated as:

m= ( -1 -5)÷ (1 - (-3))

m= ( -1 -5)÷ (1 + 3)

m= (-6)÷ 4

m= -1.5

Considering point 2 and the slope m, you obtain:

-1= -1.5×1 + b

-1= -1.5 +b

-1 + 1.5= b

0.5= b

Finally, the equation of the line is y=-1.5x +0.5.

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Wanda's first book was such a hit that she decided to do a follow-up. This one's called 101 Ways to Reinvent Leftovers.
Two publishers have offered to buy the book. The first has offered to pay her $70,000 up front and a $2 royalty for every book it sells. The second has offered to pay $40,000 up front and a $3.50 royalty for every book it sells. Over what range of sales will Wanda make more from the second deal than she will from the first deal?

Answers

So Wanda will make more money from the second deal than the first deal if she sells more than 20,000 books.

What is inequality?

In mathematics, an inequality is a statement that two values or expressions are not equal. It describes a relationship that is either greater than, less than, or not equal to another value or expression. Inequalities are often represented using symbols such as > (greater than), < (less than), ≥ (greater than or equal to), and ≤ (less than or equal to).

Here,

To determine the range of sales for which Wanda would make more from the second deal than the first deal, we need to set up an inequality that compares the total earnings for each deal. Let's let x be the number of books sold.

For the first deal, Wanda will earn:

Total earnings = $70,000 + $2x

For the second deal, Wanda will earn:

Total earnings = $40,000 + $3.50x

We want to find the range of x values for which the second deal earns more than the first deal. Mathematically, we can express this as:

$40,000 + $3.50x > $70,000 + $2x

Subtracting $2x from both sides gives:

$40,000 + $1.50x > $70,000

Subtracting $40,000 from both sides gives:

$1.50x > $30,000

Dividing both sides by $1.50 gives:

x > 20,000

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what is the area under the sine curve from 0 to pi?

Answers

Answer:   2

Work Shown:

[tex]\displaystyle \int \sin(x) dx = -\cos(x)+C\\\\\displaystyle \int f(x)dx = g(x)+C\\\\\displaystyle \int_{a}^{b} f(x)dx = g(b)-g(a)\\\\\displaystyle \int_{0}^{\pi} f(x)dx = g(\pi)-g(0)\\\\\displaystyle \int_{0}^{\pi} \sin(x) dx = -\cos(\pi)-(-\cos(0))\\\\[/tex]

[tex]\displaystyle \int_{0}^{\pi} \sin(x) dx = -\cos(\pi)+\cos(0)\\\\\displaystyle \int_{0}^{\pi} \sin(x) dx = -(-1)+1\\\\\displaystyle \int_{0}^{\pi} \sin(x) dx = 1+1\\\\\displaystyle \int_{0}^{\pi} \sin(x) dx = 2\\\\[/tex]

The area is 2 square units. You can use WolframAlpha or GeoGebra to confirm.

The probability that A occurs is 2/3. The probability that B occurs is 3/7. The probability that A and B occur is 1/7. Are the events A and B independent or dependent?

Answers

P(A and B) is not equal to P(A) * P(B), we can conclude that events A and B are dependent.

What is probability?

Probability is a measure of the likelihood or chance of an event occurring. It is a number between 0 and 1, with 0 representing an impossible event and 1 representing a certain event. The probability of an event is calculated by dividing the number of ways the event can occur by the total number of possible outcomes.

According to the given information:

We can determine if events A and B are independent or dependent by comparing the probability of both events occurring together with the product of their individual probabilities.

P(A and B) = 1/7

P(A) = 2/3

P(B) = 3/7

If A and B are independent events, then P(A and B) = P(A) * P(B). However, in this case, P(A and B) is not equal to P(A) * P(B):

P(A) * P(B) = (2/3) * (3/7) = 2/7

Since P(A and B) is not equal to P(A) * P(B), we can conclude that events A and B are dependent.

Events A and B are dependent since the probability of their intersection is not equal to the product of their individual probabilities. Specifically, P(A and B) = 1/7 while P(A)*P(B) = 2/7.

Therefore, P(A and B) is not equal to P(A) * P(B), we can conclude that events A and B are dependent.

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(x²+3x+2)(x²+7x+12)=24

Answers

Answer:

x=0, 5 (-5±√15)/2

Step-by-step explanation:

see images for solution

Last week, Austin's Diner sold 2 milkshakes with whipped cream on top and 23 milkshakes without whipped cream. What percentage of the milkshakes had whipped cream?

Answers

Answer:

  8%

Step-by-step explanation:

You want to know what percentage of milkshakes had whipped cream if 2 had whipped cream and 23 didn't.

Percentage

The fraction of the total number that had whipped cream is ...

  2/(2+23) = 2/25

The percentage is found by multiplying the fraction by 100%:

  2/25 × 100% = 8%

8% of the milkshakes had whipped cream.

Object 1: Cereal Box
3D shape: Rectangular Prism
Dimensions:
length = 12 inches
width = 8 inches
height = 1.75 inches


Object 1 3D shape: Rectangular Prism (cereal box)
SA Formula:

Surface Area:

Answers

Answer:

The surface area (SA) formula for a rectangular prism is:

SA = 2lw + 2lh + 2wh

where l is the length, w is the width, and h is the height.

For the cereal box object given, we have:

l = 12 inches

w = 8 inches

h = 1.75 inches

So, substituting these values into the formula, we get:

SA = 2(12)(8) + 2(12)(1.75) + 2(8)(1.75)

SA = 192 + 42 + 28

SA = 262 square inches

Therefore, the surface area of the rectangular prism cereal box is 262 square inches.

Step-by-step explanation:

The SURFACE AREA OF THE RECTANGULAR PRISM is 262 in²

SURFACE AREA (S.A) OF RECTANGULAR PRISM= 2lw+2lh+2wh

LENGTH=12 inches

WIDTH= 8 inches

HEIGHT=1.75 inches



Applying the formula

We get

S.A=2*(12*8)+2*(12*1.75)+2*9(8*1.75)

S.A = 192+42+28 sq inches

S.A= 262 sq inches

A culture of bacteria in a petri dish has an initial population of 1500 cells and grows at a rate (in cells/day) of N′(t)=200(t+2)−12 Assume t is measured in days.
a) What is the population after 14 days? After 34 days?
b) Find the population N(t) at any time t≥0

Answers

The population N(t) at any time t≥0 is given by the function N(t) = 100t^2 + 800t + 1332.

a) To find the population after 14 days, we need to integrate the given rate function from 0 to 14:

N(14) - N(0) = ∫(0 to 14) N'(t) dt

N(14) - 1500 = ∫(0 to 14) [200(t+2) - 12] dt

N(14) - 1500 = [100[tex]t^2[/tex] + 800t - 168] evaluated from t=0 to t=14

N(14) = 1500 + [100(14[tex])^2[/tex] + 800(14) - 168] - [100(0[tex])^2[/tex] + 800(0) - 168]

N(14) = 1500 + 17,512

N(14) = 19,012

So the population after 14 days is 19,012 cells.

To find the population after 34 days, we can use the same method:

N(34) - N(0) = ∫(0 to 34) N'(t) dt

N(34) - 1500 = ∫(0 to 34) [200(t+2) - 12] dt

N(34) - 1500 = [100[tex]t^2[/tex] + 800t - 168] evaluated from t=0 to t=34

N(34) = 1500 + [100(34[tex])^2[/tex]+ 800(34) - 168] - [100(0[tex])^2[/tex] + 800(0) - 168]

N(34) = 1500 + 116,768

N(34) = 118,268

So the population after 34 days is 118,268 cells.

b) To find the population N(t) at any time t≥0, we can integrate the given rate function from 0 to t:

N(t) - N(0) = ∫(0 to t) N'(x) dx

N(t) - 1500 = ∫(0 to t) [200(x+2) - 12] dx

N(t) = 1500 + ∫(0 to t) [200(x+2) - 12] dx

N(t) = 1500 + [100[tex]x^2[/tex] + 800x - 168] evaluated from x=0 to x=t

N(t) = 1500 + 100[tex]t^2[/tex] + 800t - 168

N(t) = 100t^2 + 800t + 1332

So the population N(t) at any time t≥0 is given by the function N(t) = 100[tex]t^2[/tex]+ 800t + 1332.

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a) The population after 14 days is 22,788 cells, and the population after 34 days is 126,056 cells.

b) The population at any time t≥0 is given by the equation N(t) = [tex]100t^2[/tex] + 388t + 1500, where t is measured in days and N(t) is the number of cells in the culture at time t.

a) To find the population after 14 days, we can use the given rate equation to calculate the growth rate at t=14 as follows:

N'(14) = 200(14+2) - 12 = 2808 cells/day

Then we can use the following formula to calculate the population after 14 days:

N(14) = N(0) + ∫N'(t) dt, from t=0 to t=14

N(14) = 1500 + ∫(200(t+2) - 12) dt, from t=0 to t=14

N(14) = 1500 + [tex][100t^2 + 400t - 12t][/tex]from t=0 to t=14

N(14) = 1500 + [tex][100(14)^2 + 400(14) - 12(14)] - [100(0)^2 + 400(0) - 12(0)][/tex]

N(14) = 1500 + 21288

N(14) = 22788 cells

Similarly, to find the population after 34 days, we can use the given rate equation to calculate the growth rate at t=34 as follows:

N'(34) = 200(34+2) - 12 = 6772 cells/day

Then we can use the same formula as above to calculate the population after 34 days:

N(34) = N(0) + ∫N'(t) dt, from t=0 to t=34

N(34) = 1500 + ∫(200(t+2) - 12) dt, from t=0 to t=34

N(34) = [tex]1500 + [100t^2 + 400t - 12t] from t=0 to t=34[/tex]

N(34) =[tex]1500 + [100(34)^2 + 400(34) - 12(34)] - [100(0)^2 + 400(0) - 12(0)][/tex]

N(34) = 1500 + 124556

N(34) = 126056 cells

b) To find the population N(t) at any time t≥0, we can use the same formula as above:

N(t) = N(0) + ∫N'(t) dt, from t=0 to t=t

N(t) = 1500 + ∫(200(t+2) - 12) dt, from t=0 to t=t

N(t) = [tex]1500 + [100t^2 + 400t - 12t][/tex] from t=0 to t=t

N(t) = [tex]1500 + 100t^2 + 388t[/tex]

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Clive wants to estimate the number of fish in apond.
Clive catches 50 fish from the pond. He marks each fish with a dye.
He then puts the fish back in the pond.
The next day, Clive catches 40 fish from the pond. 8 of these fish have been marked with the dye.
Work out an estimate for the number of fish in the pond.

Answers

Answer: 50

Step-by-step explanation
One method to estimate the number of fish in the pond is to use the mark-and-recapture method. This method assumes that the proportion of marked fish in the second sample is the same as the proportion of marked fish in the entire population. Using this assumption, we can estimate the total number of fish in the pond as follows:

Let N be the total number of fish in the pond.

Let M be the number of fish caught in the first sample (50 fish).

Let R be the number of marked fish caught in the second sample (8 fish).

Let r be the unknown total number of marked fish in the pond.

According to the mark-and-recapture method, we have the following proportion:

M/N = R/r

We can rearrange this equation to solve for N:

N = M * r / R

Substituting the values given in the problem, we have:

N = 50 * r / 8

Simplifying, we get:

N = 6.25 * r

This means that the estimated total number of fish in the pond is 6.25 times the number of marked fish in the second sample. Since we know that 8 fish were marked in the second sample, the estimate for the total number of fish in the pond is:

N = 6.25 * 8 = 50

Therefore, the estimated number of fish in the pond is 50

Choose ALL answers that describe the quadrilateral below.

Answers

All answers that describe the quadrilateral are parallelogram and rhombus.

How is the diagram a rhombus and parallelogram?

In the diagram provided as seen from online sources, the lines, BO=OD and this equals x. Next, SO=OC which equals s. Since the diagonals bisect each other, we can refer to this as a parallelogram.

Next, angle ABO equals angle ADO and since the opposite sides are parallel and equal, we can also refer to the quadrilateral as a rhombus.

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The length of a rectangle is three feet less than two times the width. The perimeter is 27 feet. Find the dimensions.​

Answers

Answer:

l = 2w - 3

2(2w - 3) + 2w = 27

4w - 6 + 2w = 27

6w - 6 = 27

6w = 33, so w = 5.5 feet and l = 8 feet

Answer:


Width: 5.5 feet

Length: 8 feet

Step-by-step explanation:

Let's begin by assigning variables to stand in for the rectangle's width and length.


Let x represent the rectangle's width.

The length is three feet shorter than double the width, according to the problem. As a result, the length may be written as:


2x - 3

The lengths of all the sides make up a rectangle's perimeter, which in this instance is:

2w + 2l

By substituting the width and length measurements we discovered:

2x + 2(2x - 3)

Simplifying:


2x + 4x - 6 = 27

6x = 33

x = 5.5

The rectangle is 5.5 feet wide as a result.

We may change x into the expression we discovered earlier to figure out the length:

2(5.5) - 3 = 8

The rectangle is 8 feet long as a result.

As a result, the rectangle's measurements are:

Width: 5.5 feet

Length: 8 feet


15x1/5=

im doing my homework its kinda confusing lol!

Answers

Answer:

3

Step-by-step explanation:

(15×1)÷5=

Need help please and thank you
Yesterday, Miron finished all his tasks in {3}{4} of an hour. Today, he finished them in {5}{12} of an hour. How much faster was he today than yesterday?

Answers

The statement that is true of the pizza is A. About half of the pizza is left.

The answer to the subtraction of the fractions is 7/24.

Miron was 1/3 of an hour faster today than yesterday.

How to find the solutions ?

Initially, 2/3 of the pizza was left over. Marcy ate 2/9 of the pizza.

2/3 - 2/9

(2/3) x (3/3) = 6/9

6/9 - 2/9 = 4/9

So, 4/9 of the pizza is left. Since 4/9 is less than half but more than very little.

2/3 - 3/8

Find a common denominator, which in this case is 24:

(2/3) x (8/8) = 16/24

(3/8) x (3/3) = 9/24

Now subtract:

16/24 - 9/24 = 7/24

The answer in simplest form is 7/24

Miron finished his tasks in 3/4 of an hour yesterday and 5/12 of an hour today.

3/4 - 5/12

Find a common denominator, which in this case is 12:

(3/4) x (3/3) = 9/12

9/12 - 5/12 = 4/12

4/12 = 1/3

Miron was 1/3 of an hour faster today than yesterday.

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PROBLEM SOLVING A wire is bent to form four semicircles. How long is the wire to the nearest hundredth? Justify your answer.

Answers

According to the nearest hundredth, the length of the wire in the photograph is 200 cm.

What in mathematics is a semicircle?

By dividing a circle into two halves along a diameter line, a semicircle is created, which is a half-circle.

The wire will be cut into four semicircles, each of which will have a circumference equal to its length.

Therefore, if one semicircle has a diameter of 32 cm, its radius is 32/2 cm, or 16 cm.

Right now, a circle's circumference equals 2*(pi)*(radius).

Since this is a semicircle, its circumference is equal to (pi)*(radius), or one-half of a circle.

The circumference of four semicircles is then equal to four * pi * radius.

Pi has a value of 22/7.

Thus, the length of the wire is 4*(22/7)*16 cm, which, when rounded to the nearest hundredth, is 200 cm.

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Hence, 201 [tex]cm^{2}[/tex] long is the wire to the nearest hundredth.

What is the semicircle?

In mathematics, a semicircle is a  one-dimensional locus of points that forms  half of a circle. It is a circular arc that  measures 180°.  It has only one line of symmetry.

What is the circumference?

In geometry, the circumference is the perimeter of a circle or ellipse. That is, the circumference would be the arc length of the circle, as if it were opened up and straightened out to a line segment. More generally, the perimeter is the curve length around any closed figure .

In other words ,The meaning of circumference is the distance around a circle or any curved geometrical shape. It is the one-dimensional linear measurement of the boundary across any two-dimensional circular surface.

According to figure

diameter of  all semi circle (d) = 32 cm.

so radius of  all semi circle r = [tex]\frac{32}{2}[/tex] = 16 cm.

length of wire = circumference of semicircle =

⇒ total length length of wire = 4 * circumference of semicircle

                                                                                 {∵ no. of semicircle=4

∴ total length length of wire = 4 * [tex]\pi*r[/tex]      

∴ total length length of wire = 4 *3.14*16              {we know that , [tex]\pi=3.14[/tex]

∴ total length length of wire =200.96[tex]cm^{2}[/tex] ≅ 201[tex]cm^{2}[/tex]

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The variable in the equation 11 = –2z + 8 is z. Remembering the formula ax + b = c, what are the values of the constants in the equation?
A) a= -8, b = 8, c= 11
B) a= -2, b= 8, c= 11
C) a= -11, b= 8, c= 11
D) a= 8, b= -8, c= 11

Answers

Answer: The given equation is 11 = -2z + 8, which can be rearranged into the form of ax + b = c by moving the terms containing z to one side:

-2z + 8 = 11

-2z = 11 - 8

-2z = 3

z = -3/2

Comparing this with the standard form ax + b = c, we see that:

a = -2

b = 8

c = 11

Therefore, the correct answer is option B: a = -2, b = 8, c = 11.

Step-by-step explanation:

The radius of a circle is 8 inches. What is the angle measure of an arc bounding a sector with area 8pi square inches?

K = 8pi sq. in

r = 8 in

Give the exact answer in simplest form.

Answers

The angle measure of the arc bounding the sector with area 8π square inches is 45 degrees.

What is area of the sector?

The area of the sector is given by the formula:

[tex]A = (1/2) r^2[/tex]θ

where A is the sector's area,  is the sector's central angle in radians, and r is the circle's radius.

The radius of the circle is 8 inches, and the area of the sector is 8 square inches. When these values are added to the formula, we get:

8π = [tex](1/2) (8^2)[/tex] θ

Simplifying, we get:

8π = 32θ

Dividing both sides by 32, we get:

θ = π/4 radians

To convert this to degrees, we multiply by 180/π:

θ = (π/4) × (180/π) = 45 degrees

As a result, the angle of the arc that divides the 8-square-inch sector is 45 degrees..

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