Please help! Its algebra!

Please Help! Its Algebra!

Answers

Answer 1

Step-by-step explanation:

don't panic. just read carefully and write equations for every relation described in the text.

perimeter = 34 cm = side 1 + side 2 + side 3

side 1 = 2×side 3

side 3 = (side 1) / 2

side 2 = (side 1) + 4

now we use the last 2 equations in the first :

34 = side 1 + ((side 1) + 4) + (side 1)/2

68 = 2×(side 1) + 2×((side 1) + 4) + side 1

68 = 2×(side 1) + 2×(side 1) + 8 + side 1

68 = 5×(side 1) + 8

60 = 5×(side 1)

side 1 = 60/5 = 12 cm

side 2 = (side 1) + 4 = 12 + 4 = 16 cm

side 3 = (side 1)/2 = 12/2 = 6 cm

you see ? it is all just straight forward. no mystery.

the only trick is to find forms of the various equations to have only one variable in the main equation. like we did here with side 1 and side 3.


Related Questions

An equation is shown below.
3x + 4y = 15
Solve the equation for x.

Answers

Answer:

x = [tex]\frac{15-4y}{3}[/tex]

Step-by-step explanation:

3x + 4y = 15 ( subtract 4y from both sides )

3x = 15 - 4y ( isolate x by dividing both sides by 3 )

x = [tex]\frac{15-4y}{3}[/tex]

What is an angle? How do you name an angle using three points? Give an example.

Answers

An angle is formed when two straight lines or rays meet at a common endpoint.

The common point of contact is called the vertex of an angle. The word angle is from a Latin word that means ‘angulus,’ meaning “corner.”

There are many examples of an angle, such as cloth hangers, arrowheads, scissors, etc.

Symbol of Angle:

The symbol ∠ represents an angle. Angles are measured in degrees (°) using a protractor.

For example, 45 degrees is represented as 45°

Parts of Angles:

Vertex: A vertex is a corner of an angle, a point where two lines/sides meet.

Arms: The two sides of the angle, joined at a common endpoint.

Initial Side: It is also known as the reference line, a straight line from where an angle is drawn.

Terminal Side: The side up to which the angle measurement is done.

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18. Which is closest to the volume of a ball with a diameter equal to 8.5 inches? Use 3.14 for V=4πTr²³ if 8.5 in is diameter, 3 what radius will you use? A. 285.7 in 3 B 352.4 in 3 C. 300.5 in 3 n 321 1 in 1​

Answers

The closest volume of ball would be 321.4

What is Volume of sphere?

The volume of a sphere is a measure of the space occupied by the sphere, and can be calculated by the formula V = 4/3πr³, where r is the radius of the sphere. In other words, the volume can be found by multiplying 4/3 by π (3.14) by the cube of the radius of the sphere. For example, if the radius is 5, the volume of the sphere would be 4/3π x 5³, or approximately 523.60.

Solution:

Given that:

diameter = 8.5 in

hence, radius would be 4.25 in

                    [tex]Volume\ of \ ball = \frac{4}{3} \pi r^{3} \\\\Volume\ of \ ball = \frac{4}{3} \pi (4.25)^{3}\\\\Volume\ of \ ball = 321.4[/tex]

Hence, The closest volume of ball would be 321.4

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Select all equations equivalent to the equation below.
1
3
(6x-9) = 12
A. 2x - 3 = 4
B. 2x - 3 = 12
C. 2x - 9 = 12
D. 6x9 = 36
E. 18x27 = 36

Answers

The equivalent equation is 2x - 3 = 4. Option A

What are equivalent expressions?

An equivalent expressions are simply described as algebraic expression that have the same solution(s) but differ in the arrangement of their values.

These expressions are known to work in the same way but look different.

Two algebraic expressions are said to be equivalent, when the expressions have the same value when plugged in the same value(s) for specific variable(s).

From the information given, we have;

(6x-9) = 12

expand the bracket

6x - 9 = 12

Find the common factors

2x - 3 = 4

Hence, the equation is 2x -3 = 4

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need help can’t figure it out!

Answers

Answer:

Step-by-step explanation:

This is a trick question,  about the red marks again.   those marks are important b/c they tell you that the lengths are the same, so that the angles MUST also be the same.  That is  ,  D and E are equal

so set up your equations with that info

180 = 84 +2p

now use your algebra skillz to solve

180-84 / 2 = p

96/2 = p

48 = p

see??

you make 9.65 per hour as a lifeguard. You work 4.5 hours in one week. How much money did you have

Answers

Answer: $43.43

Step-by-step explanation:

Take 9.65 times 4.5 = $ 43.425

Round up; we will get the answer $43.43

Ma Amati’s bought x number of shirts for the new members of the dance team. The total amount paid for x shirts, including $2.99 shipping, was $118.99. Each shirt cost $14.50. There was no sales tax on this purchase. Which equation could be used to find x, the number of shirts bought

Answers

Answer: y = 14.50x + 2.99

Step-by-step explanation:

The equation is y = mx + b

y is the total cost and x is the number of shirt

We know each shirt is $14.50, and she bought x shirts, so 14.50 is the slope

The 2.99 shipping fee is the y-intercept

So our equation is

y = 14.50x + 2.99

find the foci and vertices of an ellipse (x-1)^2/4 + (y+2)^2/9=1​

Answers

Step-by-step explanation:

The equations of axes of ellipse:

y

+

3

=

0

&

x

2

=

0

Plot the axes of ellipse. Specify the center

(

2

,

3

)

, vertices & focii on the corresponding axes. Draw a free hand curve passing through the vertices & the points of intersection of ellipse with coordinate axes to get graph.

Light travel about `180000000` kilometer in `10` minute. How many kilometer per minute i that?

Answers

The distance traveled by light in 1 minute = 18 million kilometers and the distance traveled by light in 1 second = 0.3 million kilometers.

We are given that -

The distance traveled by light in 10 minutes = 180 million km.

Now we have to find the distance traveled by light in 1 minute.

Using the unitary method, we get -

Distance traveled by light in 1 min = 180000000 / 10

Distance traveled by light in 1 min = 18 million kilometers

Now we have to find the distance traveled by light in 1 second.

We know that 1 minute= 60 seconds,

Thus, In 60 seconds light travels a distance of = 18 million kilometers. (from above)

therefore, in 1 second light would travel a distance of = 18 million / 60

                                                                                         = 0.3 million km

Hence, the distance traveled by light in 1 second = 0.3 million kilometers.

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The complete question is -

Light travels about 180 million kilometers in 10 minutes. How far does it travel in one minute? How far does it travel in one second?

your sample consists of 87 subjects, with 71 successes. calculate the test statistic, rounded to 2 decimal places

Answers

sample consists of 87 subjects, with 71 successes.the test statistic, rounded to 2 decimal places ,Test statistic = (71/87) = 0.81

To calculate the test statistic, you need to divide the number of successes by the total number of subjects in the sample.

In this case, the number of successes is 71 and the total number of subjects is 87.

Therefore, the test statistic is calculated a

s 71/87 = 0.81

which can be rounded to two decimal places. The result of the calculation is that the test statistic is 0.81.

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what lurking variables might be causing the increase in one or both of the variables? explain your answer.

Answers

A lurking variable is an explanatory variable that was not examined in a study but has an effect on the value of the study's response variable.

A concealed variable affects both the dependent and independent variables, resulting in an incorrect connection. Confounding is a causal concept that cannot be expressed using correlations or linkages. Confounders have a significant quantitative role in explaining why correlation does not imply causation.

In the case of risk assessments assessing the degree and form of threat to human health, it is critical to account for confounding in order to isolate the impact of a specific hazard such as a food additive, pesticide, or new drug. It is difficult to recruit and screen volunteers with the same background (age, diet, education, geography, etc.) for prospective studies, and historical investigations can have similar variability.

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During one winter snow storm in Denver, Colorado, Jesse noted that 6 inches of snow fell in 2
1/3 hours. What was the rate of snowfall in one hour?

Answers

Answer:

2 4/7 inches per hour

---------------------------------------------

Given:

6 inches of snow fell in 2 1/3 hours.

Divide the number of inches by the time to get the rate of snowfall:

6 ÷ 2 1/3 = 6 ÷ 7/3 =                  6 × 3/7 =                   18/7 = 2 4/7 inches

if it is not possible to obtain a list of all elements in a population, this is a; group of answer choices infinte population sample finite population statistic

Answers

if it is not possible to obtain a list of all elements in a population, this is a; group of answer choices  finite population statistic

It is also known as the group of the study, that targets the population, which helps to find the survey, which is the sampled population. It is measured by an ideal world, which will be the same, and they're always unique.  

Its sampling distribution of the "x bar" should also be naturally independent of the random sample, that is usually distributed.

We consider the population as endless if the sampling size is at least 20 times greater than the sample size.

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the adjusted r2 is always smaller than the regular r2 in multiple regression model. t or f

Answers

True. Adjusted R2 is always less than or equal to R2 in the multiple regression model.

What is regression?

A statistical method called regression links a response variable with one or more independence (explanatory) variables. A regression model can demonstrate whether changes in any or all of the independent variable are related to changes in the dependent variable.

What makes it a regression, and why?

Regress, from which the word "regression" is derived, means "to go back" in Latin (to something). Regression is the method that enables "going back" from muddled, challenging data to a simpler and more significant model in this manner. Forecasting, time series modeling, and determining the causal connection between variables are the three basic applications of regression analysis.

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find an equation of the tangent line to the curve at the given point. y = 6ex cos x, (0, 6)

Answers

y=6x+6 is the equation of the tangent line to the curve at point (0,6)

In order to fing the equation of tangent of any graph we need 2 things.

i . A point on the graph at which tangent need to be drawn.

ii . Slope a line on that point.

solpe of line = [tex]y^'[/tex]  =[tex]\frac{d(y)}{dx}[/tex]

=> d(6[tex]e^xcosx[/tex])/dx

in order to differentiate the above equation we have to use by parts

=> 6([tex]e^xcox-e^xsinx[/tex])

finding the slope at point(0,6)

[tex]y^'[/tex] = 6*(1*1-1*0)

=>6

so slope is 6

now equation of line with slope 6 and point (0,6)

=> y-6 = 6(x-0)

=> y = 6x+6

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I don’t know how to do this PLEASE HELP

Answers

3 15/8 = 39/8 = 4 7/8

2 13/6 = 25/6 = 4 1/6

1.shade 3 full 8/8 circles 2. Shade 15 little slices in the rest 3. You done with the first one 1. Shade 2 full 6/6 circles 2. Shade 13 more little slices in the rest 3. TADAAA you done

Step-by-step explanation:

find the area of the region enclosed by one loop of the curve. r = 8 sin(5θ)

Answers

16π/5 is the area enclosed by the curve r= 8sin(5θ)

The given curve is polar curve and hence the area of the polar curve is given by:

Let A be the area of the curve so,

A = [tex]\int\limits^a_b {\frac{1}{2} r^2 } \, d\theta[/tex]

where a and b is the boundary at which r=0

so after equation r=0

8sin(5θ) =0

=> sin(5θ) =0

=> 5θ = 0,π

=> θ = 0, π/5

so a=0 , b= π/5

now  

   A = [tex]\int\limits^a_b {\frac{1}{2} r^2 } \, d\theta[/tex]    ------(i)

 so   [tex]r^2[/tex] = (8sin(5θ))^2

=> 64 [tex]sin^2[/tex] ( 5θ )

ans we know that

cos(2α) = 1 -  2[tex]sin^2[/tex] α

so   [tex]r^2[/tex]  =32 (1- cos(10θ) )

putting the value of r in the equation (i) we get :-

A = [tex]\int\limits^a_b {\frac{1}{2} *32(1-cos(10\alpha ) } \, d\alpha[/tex]

=> 16 * [tex]\int\limits^a_b {(1-cos(10\alpha ) } \, d\alpha[/tex]

here a=0 and b=π/5

after putting the value and solving the integral

A = 16π/5

so A is the area enclosed by r=8sin(5θ) is 16π/5

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Question 1
© Drake - Sticky (Official Audio 41 × +
25 pts
The prices paid for a model of a new car are approximately normally distributed with a mean of $17,000 and a standard deviation of $500.

The price that is 3 standard deviations above the mean is $__

The price that is 2 standard deviations below the mean is $__

The percentage of buyers who paid between $16,500 and $17,500 is __%

The percentage of buyers who paid between $17,000 and $18,000 is __%

The percentage of buyers who paid less than $16,000 is __%

Answers

If new automobile prices are roughly regularly distributed, with a mean of $17,000 and a standard deviation of $500, then it means that the majority of the prices paid for the car will fall within a certain range.

Specifically, approximately 68% of the prices paid will be within one standard deviation of the mean, which in this case would be between $16,500 and $17,500.

Approximately 95% of the prices paid will be within two standard deviations of the mean, which would be between $16,000 and $18,000. And approximately 99.7% of the prices paid will be within three standard deviations of the mean, which would be between $15,500 and $18,500. This demonstrates that the prices paid for the cars are generally consistent, with only a tiny percentage deviating from the mean and standard deviation-defined range.

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Which table of ordered pares represents a proportional relationship?

Answers

There is not table to look at or any ordered pairs.

hi
If Tessa has carved 24 bird figures, how many figures has she carved altogether?
figures

Answers

Answer:

She has carved 4 times as many bird figures

a manufacturer conducted a survey to determine how many people buy products p and q. what fraction of the people surveyed said that they buy neither product p nor product q ?

Answers

The fraction of the people surveyed that said that they buy neither product p nor product q is 1/6.

It is given to us that -

A survey is conducted with the number of people buying products p and q

We have to find out the fraction of the people surveyed said that they buy neither product p nor product q.

From the given information, the total number of products can be represented as -

[Total products bought] = [p products bought] + [q products bought] - [both p and q bought] + [neither p and q bought] ---- (1)

We have to find out -

[neither p and q bought]/[Total products bought]

Let us assume that the total products bought = 6

It is known that 1/3 of the people surveyed said that they buy product p but not product q.

=> [p products bought] - [both p and q bought] = 1/3 * 6

=> [p products bought] - [both p and q bought] = 2 ------ (2)

From equation (1), we can say that -

[Total products bought] = [p products bought] + [q products bought] - [both p and q bought] + [neither p and q bought]

=> 6 = ([p products bought] - [both p and q bought]) + [q products bought] + [neither p and q bought]

From equation (2), we can write the above equation as -

=> 6 = 2 + [q products bought] + [neither p and q bought]

=> [q products bought] + [neither p and q bought] = 4  ------ (3)

Again, it is also known that 1/2 of the people surveyed said that they buy product q.

=> [q products bought] = 1/2 *6

=> [q products bought] = 3 ---- (4)

From equation (3) and equation (4), we can say that -

[q products bought] + [neither p and q bought] = 4

=> 3 + [neither p and q bought] = 4

=> [neither p and q bought] = 1  ------ (5)

From equation (5) and the total number of products bought, we can say that -

[neither p and q bought]/[Total products bought] = 1/6

(Since, the total number of products bought = 6)

Therefore, the fraction of the people surveyed that said that they buy neither product p nor product q is 1/6.

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(3x)°
(6x-12)
(2x+13)° find the value of x

Answers

Answer:

x = 25

Step-by-step explanation:

The two interior angles equal the exterior angle.

6x - 12 = 3x + 2x + 13  Combine like terms

6x - 12 = 5x + 13  Subtract 5x from both sides of the equation

6x -5x - 12= 5x - 5x + 13

x - 12 = 13  Add 12 to both sides of the equation

x - 12 + 12 = 13 + 12

x = 25

. a paper cup has the shape of a cone with height 10 cm and radius 3 cm (at the top). if water is poured into the cup at a rate of 2 cm3 ys, how fast is the water level rising when the water is 5 cm deep?

Answers

The water level is rising at a rate of 0.0764 cm per second.

Using implicit differentiation, it is found that the water level is rising at a rate of 0.0764 cm per second.

The volume of a cone of radius r and height h is given by:

V = πr²h/3

Applying implicit differentiation, the rate of change is given by:

dV/dt = 2πr/3 dr/dt + πr²/3 dh/dt

In this problem:

The radius is constant, thus dr/dt = 0

Height of 5 cm and radius of 3 cm, thus h = 5, r=3.

Water poured at a rate of 2 cm³/s, thus dV/dt = 2

Then

dV/dt = 2πr/3 dr/dt + πr²/3 dh/dt

2 = 25π/3 dh/dt

dh/dt = 6/25π

dh/dt = 0.0764

The water level is rising at a rate of 0.0764 cm per second.

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Machine fills rate 135 containers per minute how long will it take to fill 1000 containers at the same rate

Answers

At the rate of 135 containers per minute, it will take approximately 7.4 minutes to fill 1000 containers.

To determine the time it takes to fill 1000 containers, we need to divide the number of containers by the rate at which they are filled. In this case, we have 1000 containers and a filling rate of 135 containers per minute, so we divide 1000 by 135 to find the time it takes to fill the containers:

1000 containers / 135 containers/minute = 7.40740740740741 minutes

Since a minute cannot be divided into fractions, we must round the result to the nearest whole number. This means that it will take approximately 7.4 minutes to fill 1000 containers at a rate of 135 containers per minute.

The machine will take 7.41 minutes (approx) to fill 1000 Containers.

Time taken to fill 135 Containers= 1 minute ...............(Given)

Time taken to fill 1 Container= 1/135 minute

Time taken to fill 1000 Containers = 1000 × 1/135 minutes

                                                         = 1000/135 minutes

                                                         = 200/27 minutes

                                                         ≈ 7.41 minutes​.

Thus, The machine will take 7.41 minutes (approx) to fill 1000 Containers.

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Frank drove 567 miles in 9 hours. At the same rate, how long would it take him to drive 441 miles?

Answers

To determine how long it would take Frank to drive 441 miles at the same rate, we can divide the distance by the rate to find the time. The rate is equal to the distance divided by the time, so we can find it by dividing the distance Frank traveled by the time it took him to travel that distance.

In this case, the distance Frank traveled is 567 miles and the time it took him to travel that distance is 9 hours, so the rate is 567 miles / 9 hours = 63 miles per hour.

To find the time it would take Frank to travel 441 miles at this rate, we can divide the distance by the rate. This would give us 441 miles / 63 miles per hour = <<441/63=7>>7 hours.

Therefore, if Frank were to travel 441 miles at the same rate as his previous trip, it would take him 7 hours.

to use a binomial distribution to approximate the count of successes in an srs, why do we require that the sample size n be less than 10% of the population size n?

Answers

The given population is 10%.

If the 10 % condition is met, a binomial distribution can be used to approximate the number of successes in a simple random sample. The 10% condition requires that the sample represents less than 10% of the population. Despite the fact that the sample size is far too tiny in comparison to the population, it is reasonable to infer that the trials of occurrences are independent. This suggests that the sample size n must be smaller than 10% of the population size N in this situation.

According to the 10% condition, sample sizes shouldn't exceed 10% of the population. Check the condition whenever samples are involved in statistics to make sure your findings are reliable. If you want to employ a typical normal model, some statisticians contend that a condition of 5% is preferable to a condition of 10%.

Hence we get the required answer.

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Which congruence theorem can be used to prove △abc ≅ △dbc? aas sss hl sas

Answers

The congruence theorem that would best prove the congruence of the triangles is SAS that is Side-Angle-Side.

What is congruence theorem?

Congruent refers to something that is "absolutely equal" in terms of size and form. The shapes hold true regardless of how we rotate, flip, or turn them. Draw two circles with the same radius, for instance, cut them out, then stack them on top of one another.

The figure, in this case a triangle, is congruent if and only if the corresponding sides and angles are equal in measurement. In this case we have BC being common to both triangles. Thus, one pair of corresponding sides is equal. Next, we have another pair of corresponding sides that are equal, AC and DC. Lastly, we have the included angles being equal to each other. Thus, the congruence theorem that would best prove the congruence of the triangles is SAS that is Side-Angle-Side.

Complete question: Triangles ABC and DBC have the following characteristics: BC is a side of both triangles ∠ACB and ∠DCB are right angles AC ≅ DC Which congruence theorem can be used to prove △ABC ≅ △DBC?

AAS

SSS

HL

SAS

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Can someone please help I’ll mark a brain list

Answers

Answer: x = 14

Step-by-step explanation:

3x+9x-5=163

12x-5=163

12x=163+5

12x=168

x=14

Factorize:
x^4 - (x-z)^4

Answers

=(2x2 −2xz+z ^2 )(2x−z)(z)

Help me with number two please. It’s asap

Answers

The z-score of the blood pressure readings are:

a = 1.4

b = 0.6

c = 1.2

What is a mean?

It is the average value of the set given.

It is calculated as:

Mean = Sum of all the values of the set given / Number of values in the set

We have,

Mean = 121

Standard deviation = 15

The z-score is given as,

z = (x - mean) / Standard deviation

x = 142

z = (142 - 121) / 15

z = 21/15

z = 7/5

z = 1.4

x = 130

z = (130 - 121) / 15

z = 9/15

z = 3/5

z = 0.6

x = 103

z = (103 - 121) / 15

z = 18/15

z = 6/5

z = 1.2

Thus,

The readings are:

a = 1.4

b = 0.6

c = 1.2

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The gas collected in the eudiometer displaced water (just like in your experiment): She allowed the reaction to proceed for 10 minutes and collected the following data: initial mass KCIOg: 191.3 mg final mass KCIOg: 52.9 mg gas temperature: 34.5 % liquid water temperature: 32.7 % volume of water displaced: 49.18 mL height of water column remaining: 5.8 cm Unfortunately; the student failed to record the atmospheric pressure: Make reasonable assumption for the value of the missing data and calculate the value of R. atmospheric pressure (atm) Enter your estimate of the atmospheric pressure molar gas constant (Latmlmolk) Enter the value of R Evaluate 14.1 on the basis of the structures presented in this chapter, sketch repeat unit structures for the following polymers: (1) polychlorotrifluoroethylene (2) poly(vinyl alcohol), (3) polystyrene, and (4) polypropylene. Frosty the Snowman thought he could last in a greenhouse for 2 hours before melting. Unfortunately, it only took him 1 12 hours to melt. Percent error is a way to describe error, expressed as a percentage of the actual amount. What is the percentage error in this situation? Question 5 of 20Which of the following characters most plausibly symbolizes the sense ofdisplacement that African Americans faced before and during the civil rightsera?A. Theresa, a new lawyer attempting to thrive in a firm that is runentirely by menB. Margaret, a single mother who is expected to work two jobs at thesame timeC. Peter, a wrongly convicted man who tries to convince people thathe's innocentD. Warren, a deceptive con artist who lives up to his reputation as acrook An individual who isXXYhas Kleinfelter's syndrome. Select all the possible places during meiosis in the mother or father where non-disjunction could create a gamete that results in Kleinfelter when mated with a normal gamete. meiosis I in the father meiosis II in the mother meiosis II in the father meiosis I in the mother the variety of communications channels for public relations departments has decreased due to combined technology options. dream ice cream company paid $500,000 in salaries last year along with $25,000 in income tax. how would you best classify these expenses if you were preparing its cash flow statement? a point-to-point microwave link is being implemented at 10 ghz using identical parabolic antennas on each end of 20 cm diameter and illumination efficiency of 90%. find the gain of these antennas. g lue Devil Savings and Loan Association has a large number of 10-year fixed-rate mortgages and obtains most of its funds from short-term deposits. It uses the yield curve to assess the market's anticipation of future interest rates. It believes that expectations of future interest rates are the major force in affecting the yield curve. Assume that an upward-sloping yield curve with a steep slope exists. Based on this information, should Blue Devil consider using financial futures as a hedging technique? ExplainBlue Devil should sell financial futures to hedge the potential effects of rising interest rates on its spread FILL IN THE BLANK. of the following, only ________ is a valid unit for reaction rate. A local university offers a review course for those who are planning to take the GRE exam. Thirtypercent of the people who took the exam had attended the university's GRE review course. The resultsof the test showed that 60% of those who attended the review passed the exam, while among those whodid not attend the course, only 20% passed the exam. An individual has passed the exam. Knowing this,what is the probability that he attended the review course? complete the concept map to classify general sensory receptors by structure, stimulus detected, and body location. drag the appropriate labels to their respective targets. view available hint(s)for part a resethelp Claim: all natural numbers are either even or odd. Proof: By induction. Base case:0 is even, since 0 = 2.0. Now suppose that n - 1 is either even or odd, and we must show that n is either even or odd. Case 1: If n - 1 is even, then n - 1 = 2k for some k, so n = 2k + 1, showing n must be odd. Case 2: If n - 1 is odd, thenn - 1 = 2k +1 for some k, so n = 2k + 2 = 2(k+1), showing n must be even. Is this proof correct?Yes No molecules coming in contact with each other does not ensure that a reaction will occur. however, increasing the number of collisions increases the rate of successful interactions by creating more opportunities for them to happen. select all of the conditions that need to be met by the molecules for a collision to lead to a successful reaction.