Mathematics College

If You Know The Answer Help :)

If You Know The Answer Help :)

Answers

Answer 1

Answer:

0.3

Step-by-step explanation:

Answer 2

Answer:

3/20

Step-by-step explanation:

1/5=4/20

7/20-4/20=3/20

Hope this helps!

Related Questions

whats 6 x 3 + 36 help meeeeeeeeeeeeeeeeeeeeeee

Answers

Answer:

54

Step-by-step explanation:

the ordered pair (x,y)=(2,-3) is a solution to which of the following systems of equation

Answers

Answer:

Y=2x-7

Step-by-step explanation:

Which of the following is a radical equation?
a. x StartRoot 3 EndRoot = 13
b. x + StartRoot 3 EndRoot = 13
c. StartRoot x EndRoot + 3 = 13
d. x + 3 = StartRoot 13 EndRoot

Answers

The starting radical equation of the problem is d x+3=StarRoot 13 EndRoot

Answer:

the answer is D

Step-by-step explanation:

A group of students formed a circle during a game. The circumference of the circle was about 43.96 feet, and the diameter of the circle was 14 feet.



Which expression best represents the value of
π
?

A.
43.96
7

B.
43.96
14

C.
7
43.96

D.
14
43.96

Answers

Answer:

pi = pi

Step-by-step explanation:

Circumference = 2 * pi * r

Equation you need:

43.96 = 2 * pi * 7

43.96 = 2 * 7 * pi

43.96 / 14 = pi

pi = 3.14

9. A candle has an initial height of12 inches. Sara lights the candle and it begins to melt at an average rate of 0.5
inch per hour. Which function can be used to find the height of the candle inches after x hours?
A) H(X) = 0.5(x +12) B) H(x) = -0.5(x +12) C)H(x) = 12 +0.5x
+
D) H(X) = 12 -0.5x
1 Pt
А.
B
D
E

Answers

Answer:

D

Step-by-step explanation:

h(x)=12-0.5x

x=hour

Molecules of a toxic chemical eventually decompose into inert substances. Suppose the decomposition time is exponentially distributed with a mean of 1/lambda. The half-life of such a persistent poison is that time beyond which the probability is .50 that a particular molecule will remain toxic. Find the half-life for chemicals whose molecules have an average decomposition time of

Answers

Answer:

a)4.15 years

b)22.18 years

c)188.53 years

d)3027.66 years

Step-by-step explanation:

Formula : [tex]P(X\leq t)=1-e^{\frac{-t}{\lambda}}[/tex]

So, [tex]P(X>t)=1-(1-e^{\frac{-t}{\lambda}})[/tex]

[tex]P(X>t)=e^{\frac{-t}{\lambda}}[/tex]

We are given that The half-life of such a persistent poison is that time beyond which the probability is .50 that a particular molecule will remain toxic i.e. P(X>t)=0.5

So, [tex]e^{\frac{-t}{\lambda}}=0.5[/tex]

Taking natural log both sides

[tex]ln(e^{\frac{-t}{\lambda}})=ln(0.5)\\\frac{-t}{\lambda}=ln(0.5)\\t=-\lambda ln(0.5)[/tex]

a)

[tex]\lambda =6[/tex]

t=-(6) ln(0.5)=4.15 years

b)

[tex]\lambda =32[/tex]

t=-(32) ln(0.5)=22.18 years

c)

[tex]\lambda =272[/tex]

t=-(272) ln(0.5)=188.53 years

d)

[tex]\lambda =4368[/tex]

t=-(4368) ln(0.5)=3027.66 years

7th grade math help me pleasee

Answers

Answer:

a, c, b

Step-by-step explanation:

ITS CORRECT TRUST MEEE

A taxi driver charges a fee if $4 plus 1.50 per mile. If you total was $13 how manu miles did you take

Answers

Answer:

6

Step-by-step explanation:

you need to do this (13-4)/1.50

Need answers ASAP
I will give brainliest to first who responds

Answers

Sksjsksjdjjdjdjdjrjjdjdjtirirjkr

Calculating Rate of change

Answers

Answer/Step-by-step explanation:

We are given the following coordinates of two points on the line of the graph shown in the question as: A(2, 1) and B(4, 2)

Vertical change from point A = [tex] y_2 - y_1 = 2 - 1 = 1 [/tex]

Horizontal change from point A = [tex] x_2 - x_1 = 4 - 2 = 2 [/tex]

Rate of change = [tex] \frac{y_2 - y_1}{x_2 - x_1} = \frac{1}{2} = 0.5 [/tex]

what came in the mail today

Answers

Answer:

me

Step-by-step explanation:

A bunch of bills for spectrum tv

If Micah save $150 how much money will his parents give him

Answers

Answer:

$300

Step-by-step explanation:

150/5 = 30, 30 x 10 = 300

Need help with this problem and a step by step explanation

Answers

the answer b
(i can’t explain and if i did it would be confusing)
but here’s this:
the lower the number, the more to the right

(Simplify the equation) 3n+5+2n=5+n+6n-n​

Answers

Answer:

n=0

Step-by-step explanation:

3n+5+2n=5+n+6n-n​

move like terms together

3n+2n+5=5+n+6n-n

simplify down

5n+5=5+6n

subtract 5n from each side

5=5+n

subtract 5 from each side

0=n

Dylan makes $336 for 32 hours of work, and Angela makes $420 for 42 hours of work.

1] How much do Dylan and Angela each make per hour?

2] Is Dylan’s wage for 25 hours proportional to Amber’s wage for 42 hours? Why or why not?

Answers

Answer:

Step-by-step explanation:

1 . Dylan : $336/32 hrs = 10.50/ hr Angela : $420/42hrs = $ 10.00/hr

2. No because $ 10.50x25 262.50 where ambers is 15 420 there unit rate is different.

Dylan $10.5 per hour
Angela $17.5 per hour
no its not proportional because half of 50 is 25 so therefore 42 would not be prportional to 25

Economists study the way society uses its resources. One important resource studied is agriculture. The recent increase in demand for organic produce has created some interesting economic scenarios for both farmers and consumers. Click the article to learn key facts about the economics of organic produce and answer a few questions.

Which is a reason that organic farming is more expensive than conventional farming?



How many years must a farm be run organically before its produce can be labeled as “organic”?



What is a benefit of crop rotation?

Answers

Answer:

Which is a reason that organic farming is more expensive than conventional farming?

Organic farmers must pay for a costly certification process

How many years must a farm be run organically before its produce can be labeled as “organic”?

3

What is a benefit of crop rotation?

Rotating crops can help build healthy soil.

Step-by-step explanation: Hope you pass! :)))

first one is C second one is 3 third one is A

hope i helped

Keith 1,342 cupcake rounds to 1,300 and joe 1,347 cupcake rounds to 1,350 who round to the nearest hundred?

Answers

Answer:

Keith

Step-by-step explanation:

When you are rounding to the nearest hundred it would NOT include a tens or ones value. So in this case 1,300 would be correct.

Hope that helps and have a great day!

what is the least common denominator of 4/5 and 3/10?plssreal quick​

Answers

Answer:

5

Step-by-step explanation:

The least common denominator of 4/5 and 3/10 would be 5.

Here is a figure that looks like the letter A, along
with several other figures. Which figures are scaled
copies of the original A?

Answers

Figure 2 as it is the same as original but bigger

What is the value of x in the figure below? asap :(

Answers

Answer:

22.5

Step-by-step explanation:

Step 1:

8x - 50° = 6x - 5°              Vertical ∠'s

Step 2:

8x = 6x + 45°        Add 50° on both sides

Step 3:

2x = 45°     Subtrat 6x on both sides

Step 4:

x = 45° ÷ 2     Divide

Answer:

x = 22.5

Hope This Helps :)

help!!!

3 Peter measured the width of a room as 28 feet
and the length as 17 feet. About how many
square feet does the room cover?
Area = length X width

Answers

answer: 476
Area = length X width 28x17= 476

It cost Emma $5.34 to send 178 text messages. How much does each text cost to send?

Answers

Answer:

approximately $0.33

Step-by-step explanation:

you just do 178/5.34

What is the solution (x,y) to the system of equations given? 2 x + 4 y = − 16 2x+4y=−16 2 y − x = = 16 2y−x==16

Answers

Answer:

(-12,2)

Step-by-step explanation:

2x + 4y = -16

2y - x = 16

Multiply the bottom part by 2.

2x + 4y = -16

4y - 2x = 32

Add the equations and the answers to the equations up, and they will equal each other.

(2x + 4y) + (4y - 2x) = -16 + 32

8y = 16

y = 2

Plug y = 2 to the 2nd equation.

2*2 - x = 16

4 - x = 16

Subtract 4 from both sides.

-x = 12

Multiply both sides by -1.

x = -12

Lex be a random variable that represents the pH of arterial plasma (le, acidity of the blood). For healthy adults, the mean of the distribution is - 7.4.1 A new drug for arthritis has
been developed. However, it is thought that this drug may change blood pH. A random sample of 31 patients with arthritis took the drug for 3 months. Blood tests showed that x = 8.6 with
sample standard deviations - 2.7. Use a 5% level of significance to test the claim that the drug has changed (either way) the mean pH level of the blood.
USE SALT
(a) what is the level of significance?

what is the value of the sample test sisse? (Round your answer to three decimal places)

Answers

Answer:

2.304

Step-by-step explanation:

Gloria deposited $500 into a bank account that earned 7.5% simple interest each year. She earned $225 in interest before closing the account.

No money was deposited into or withdrawn from the account.

How many years was the money in the account?

Round your answer to the nearest whole year.

Answers

Answer:

6

Step-by-step explanation:

7.5 % × 500 = 37.5

37.5 × 6 = 225

Answer:

6

Step-by-step explanation:

PLEASE help it's due like right now

Answers

Answer:

B (6,7)

Step-by-step explanation:

point x has moved 2 places left, so you move z to places left

I think the answer would be B:)

Skyler solved an equation incorrectly, as shown below:

Step 1: 12 + x = 36
Step 2: x = 36 + 12
Step 3: x = 24

Which statement best explains why Step 2 is incorrect in Skyler's solution?

Answers

Answer:

Step 2 is incorrect.

Step-by-step explanation:

It's incorrect because I'm pretty you need to do inverse operation. To get 24 you must subtract, not add.

Find m a. 90
b. 31
c. 59

Answers

Answer:

i think its B

sorry if its wrong im not really sure by my answer

over a two hour time period a snail moved 50 inches. how far is this in yards​

Answers

Answer:

1.38889

Step-by-step explanation:

Answer:

your answer is 1.3889 plz mark brainlist thank you

What is the remainder of 2x3 − 7x2 + 5x − 1 divided by (x − 3)?

−211
5
−133
2

Answers

By the remainder theorem, the remainder upon dividing p(x) = 2x³ - 7x² + 5x - 1 by x - 3 is p(3),

p(3) = 2(3)³ - 7(3)² + 5(3) - 1 = 5

Other Questions
Although LaSalle's efforts to colonize Texas were unsuccessful, they led to which of the following reactions by the Spanish?AThey increased their efforts to colonize the area through missions and presidiosBThey withdrew their colonization efforts to avoid potential conflict with the French.They used the American Indian tribesmen to defend the coast against the French returningDThey are following LaSalle and killed him before he could make other efforts to colonize the Texas coast Situational irony occurs whenwhat is expected to happen isdifferent from what actuallyhappens. From thehighlighted passage in Sec. 7,we expect that...A. The two men will most likely die in thewoods.B. The two men will be rescued shortlyand share a meal together later.C. The two men will be fine; the readerwill find out they are not that injured afterall. Solve for x 2(-4x+2)=28 What does the passage state that people can do if the government fails to protect their rights? stop paying taxes create a new country stop voting in elections create a new government 2x+5=119 solve for x Solve: x/4 - x/8 = 5 Engineers are using computer models to study train collisions to design safertrain cars. They start by modeling an elastic collision between two train carstraveling toward each other. Car 1 is traveling east at 6 m/s and has a massof 3,154 kg, Car 2 is traveling west at 23 m/s and has a mass of 8,296 kg.After the collision, car 1 has a final velocity of 7 m/s west. What is the finalvelocity of car 2?A. 18 m/s eastB. 23 m/s westC. 23 m/s eastD. 18 m/s westSUN Which expression is equivalent to |1-5| + |3|?O -2O -8O 2O 8 Nemecek Brothers make a single product on two separate production lines, A and B. Its labor force is equivalent to 1000 hours per week, and it has $3000 outlay weekly on operating costs. It takes 1 hour and 4 hours to produce a single item on lines A and B, respectively. The cost of producing a single item is $5 on line A and $4 on line B. (a) Write the inequality that expresses the labor information. (b) Write the inequality that expresses the cost information. in simba the temperature was 6c in the morning on a particular day . What was the temperature during the night if it further dropped by 9c If two distinct lines intersect, which is NOT necessarily true? favorite color?A. blue B.greenC. red D.purpleGet it right and you get be brainlist The aerobic cellular respiration (release of energy from food) of carbohydrates occurs in the 8. What is Planck's law?O F = hmO F = MAO E = hfO E = mc (squared) why is pubg ban in india what has six faces but does not wear make up, has twenty one eyes but cannot see. what is it? answer correctly to get brainliest Which statement about -8 and-12 is true? Dodie Company completed its first year of operations on December 31. All of the year's entries have been recorded except for the following: At year-end, employees earned wages of $4,000, which will be paid on the next payroll date in January of next year. At year-end, the company had earned interest revenue of $1,500. The cash will be collected March 1 of the next year. Required: 2. Prepare the required adjusting entry for transactions (a) and (b). (If no entry is required for a transaction/event, select "No journal entry required" in the first account field.) Implement a binary search function in three substantially different programming languages. In each program (identical, except for the programming language), carry out the same 10,000,000 unsuccessful searches for eight different-sized arrays, namely arrays of sizes 128, 512, 2048, 8192, 32768, 131072, 524288, and 2,097,152. Measure in each of the three programs the time it takes to do the 10,000,000 searches for each of the eight arrays. Compare these timings to the theoretical timings the algorithm binary search provides. Are there differences between the three programs? Explain your timings and observations!! familia de palabras de oferta pls respond fast due at 8pm