-2 - 12 please help me guys, thanks to the people who helped I also need a example on how you got the answer thanks.

Answer:

10a+70

Step-by-step explanation:

7x+21

13x

12a-36

-22x

-4b-12

say

Answer:

he can make 5 batches of cookies

Step-by-step explanation:

Answer:

Step-by-step explanation:

Let the number of representatives be r and senators be s

The we have system of equations:

Substitute r in the first equation:

Solving for s:

Answer:

m=n

Step-by-step explanation:

Answer:

1. $82,500

2. 169 : 110

Step-by-step explanation:

The computation is shown below:

Given that

1. Ratio between two computers is 3:2

And the first computer cost is $55,000

Let us assume the price of the second computer be x.

As we know that

Product of extremes = Product of mean.

2 : 3 :: 55000 : x .

Now cross mutiplication is to be done

2x = $55,000 × 3

x = $1,650,000 ÷ 2

= $82,500

2. Now if the price of the 2nd computer rised by $2,000

So the new cost would be

= $82,500 + $2,000

= $84,500

Now the ratio would be

= $55,000 :  $84,500

= 169: 110

Answer:

they are both divisible by 3

7 x 3 = 21

5 x 3 = 15

Step-by-step explanation:

hope this helps lucas (mr. calvelo)

Answer:

Large necklaces for 5 is $28.00 and small 3 necklaces is $14.10

Step-by-step explanation: $5. 60 times 5 equals to $28.00 and $4.70 times 3 equals $14.10

Answer:

The answer is $42.10

Step-by-step explanation:

All you have to do is multiply 5.6 by 5

and multiply 4.7 by 3

Then you add the products together to get your answer

Answer:

just plug in the a b c and d for r and wich ever one makes that equatio equal then it that on

Step-by-step explanation:

Answer:

Step-by-step explanation:

-1.5(4-R)=12 divide both sides by -1.5

4-R=12/-1.5 calculate

4-R= -8 subtract 4 from both sides

-R=-8-4 calculate

-R=-12 multiply by -1

R=12

Answer:

The required value of x is 12 units.

Step-by-step explanation:  Given that the figure A is a scale image of figure B.

We are to find the value of x.

Since figure A is the scale image of figure B, so both the figures are similar to each other.

Also, the corresponding sides of the similar figures are proportional, so we get

Thus, the required value of x is 12 units.

Answer:

1. Three things influence the margin of error in a confidence interval estimate of a population mean: sample size, variability in the population, and confidence level. For each of these quantities separately, explain briefly what happens to the margin of error as that quantity increases.

Answer: As sample size increases, the margin of error decreases. As the variability in the population increases, the margin of error increases. As the confidence level increases, the margin of error increases. Incidentally, population variability is not something we can usually control, but more meticulous collection of data can reduce the variability in our measurements. The third of these—the relationship between confidence level and margin of error seems contradictory to many students because they are confusing accuracy (confidence level) and precision (margin of error). If you want to be surer of hitting a target with a spotlight, then you make your spotlight bigger.

Answer:

the three things influence the margin of error in a confidence interval estimate of a population mean - sample size variability in the population and confident level as the variability in the population increases the margin of error increases. as the cofidence level increases, the margin of error increases.

Step-by-step explanation:

hope this helps :)

Answer:

[tex]y = 7(3^x)[/tex]

Step-by-step explanation:

Given

[tex](x_1,y_1) = (0,7)[/tex]

[tex](x_2,y_2) = (4,567)[/tex]

Required

Determine the formula

An exponential function is of the form:

[tex]y = ab^x[/tex]

For point [tex](x_1,y_1) = (0,7)[/tex]

[tex]7 = ab^0[/tex]

[tex]7 = a*1[/tex]

[tex]7 = a[/tex]

[tex]a = 7[/tex]

For point [tex](x_2,y_2) = (4,567)[/tex]

[tex]567 = ab^4[/tex]

Substitute 7 for a

[tex]567 = 7*b^4[/tex]

Divide both sides by 7

[tex]81 = b^4[/tex]

Take 4th root of both sides

[tex]\sqrt[4]{81} =\sqrt[4]{b^4}[/tex]

[tex]\sqrt[4]{81} =b[/tex]

[tex]b = \sqrt[4]{81}[/tex]

[tex]b = 3[/tex]

Substitute 7 for a and 3 for b in [tex]y = ab^x[/tex]

[tex]y = 7 * 3^x[/tex]

[tex]y = 7(3^x)[/tex]

Answer:

Step-by-step explanation:

A=P(1+r)^t

where A-final amount, P-intial amout, r-interest rate, t-time

A=1000(1+0.03)^3 = $ 1092.73

Answer:b

Omnivore and predator

Step-by-step explanation:

D

Step-by-step explanation:

the y is -2

and the slope is 2/5

which means it is y=2/5x -2

Answer:

12 hours

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

Easy B                  

Step-by-step explanation: srry If It's Wrong

Answer:

-9/8 times x

Step-by-step explanation:

9x+8y=7 also = y=-9/8x+7/8.

Answer: the constant is 7

Step-by-step explanation:

Answer:

the answer is A

Step-by-step explanation:

Answer:

The equation of a line that passes through the points (-2, 8) and (1,−1) in the fully reduced form will be:

Step-by-step explanation:

Given the points

[tex]\mathrm{Slope\:between\:two\:points}:\quad \mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\left(x_1,\:y_1\right)=\left(-2,\:8\right),\:\left(x_2,\:y_2\right)=\left(1,\:-1\right)[/tex]

[tex]m=\frac{-1-8}{1-\left(-2\right)}[/tex]

[tex]m=-3[/tex]

As the equation of a line in point-slope form is given by:

[tex]y-y_1=m\left(x-x_1\right)[/tex]

substituting the values m = -3 and the point (-2, 8)

[tex]y-8=-3\left(x-\left(-2\right)\right)[/tex]

[tex]y-8=-3\left(x+2\right)[/tex]

[tex]y-8+8=-3\left(x+2\right)+8[/tex]

[tex]y=-3x+2[/tex]

Therefore, the equation of a line that passes through the points (-2, 8) and (1,−1) in the fully reduced form will be:

Answer:

125

Step-by-step explanation:

Answer:

y=x+0.625

Step-by-step explanation:

Since, x represents the number of hour kiran read,

According to the question,

The number of hours Andre read = 5/8 more than the number of hour kiran read

= 5/8 more than x

= x + 5/8 of x

Answer:

Cheetahs can go from 0 to 60 miles per hour in just 3.4 seconds and reach a top speed of 70 miles per hour. While they are the fastest land animal in the world, they can only maintain their speed for only 20 to 30 seconds.

Step-by-step explanation:

Answer:

ok this was a good one so here

Step-by-step explanation:

4 120 30

25 750 30

9 270 30

Answer:

Slope is 8 here

Y= mx +c

And c= 8

Y = - 2x + 8

Answer: 42

Step-by-step explanation: 3 x 14

Answer:

Step-by-step explanation:

If it costs $30 to make 6 notebooks then that is $5 for each notebook. So multiply $5 times 50 and you get $250.

Answer:

Option (D)

Step-by-step explanation:

By applying sine rule in the triangle shown,

Since, [tex]\text{sin}\theta=\frac{\text{Opposite side}}{\text{Hypotenuse}}[/tex]

By this rule,

[tex]\text{sinx}=\frac{\text{5000}}{8000}[/tex]

x = [tex]\text{sin}^{-1}(\frac{5}{8})[/tex]

x = [tex]\text{sin}^{-1}(0.625)[/tex]

x = 38.682°

  ≈ 38.7°

Therefore, Option (D) is the correct option.

Answer:

17

Step-by-step explanation:

Answer:

The civil war ended in 1865

Answer:

1865

Step-by-step explanation:

Answer:

I think its b

Step-by-step explanation:

Sorry if im wrong :(

The ways that can be used to determine whether a linear relationship is proportional are-

A) The equation is in y = kx form.

In mathematics, proportionality indicates that two quantities or variables are related in a linear manner. If one quantity doubles in size, so does the other and so on.

Now the since the proportionality is the relationship in the linear manner.

This is represented as

x ∝ y.

⇒ x =  ky

k is the constant of proportionality.

A direct proportionality can also be viewed as a linear equation in two variables with a y-intercept of 0 and a slope of k. This corresponds to linear growth.

Thus, the ways that can be used to determine whether a linear relationship is proportional are-

A) The equation is in y = kx form.

To learn more about proportionality :

https://brainly.com/question/2143065

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