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3 years ago

8

Ashley won 40 lollipops playing hoops at her schools game night later she gave two to each of her friends she only has 4 remaini

ng how many friends does she have
please answer in a two step equation

1 answer:

rosijanka [135]3 years ago

4 0

divide 2 into 40 that gives you 20 then subtract 2 that gives you your answer

cause she only had two left

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Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The profit on every sandwich is $2 and the profit

AleksandrR [38]

2x + 3y = 1470
3y = -2x + 1470
y = -2/3x + 490 <== slope intercept form
=================
y = -2/3x + 490
slope = -2/3
y int = (0,490)
=================
description of graphing : Plot ur point at (0,490). Since the slope is -2/3, starting at (0,490)...go down 2 and to the right 3,then down 2 and to the right 3 and you will eventually cross the x axis at the x intercept.

The x intercept can be found by subbing in 0 for y and solving for x
y = -2/3x + 490
0 = -2/3x + 490
2/3x = 490
x = 490 * 3/2
x = 1470/2 = 735...so ur x intercept is (735,0)

therefore, your line will cross the x axis at (735,0)
========================
function notation is : f(x) = -2/3x + 490
========================
suppose his profit is 1593....
2x + 3y = 1593
3y = -2x + 1593
y = -2/3x + 531

the graphs for the two months :
similarities : they both have the same slope of -2/3
differences : they have different x and y intercepts
By the way, these are parallel lines
===================
sorry about the last one....can't see the 3rd month graph

7 0

3 years ago

A researcher is interested in estimating the savings account balance of customers at a large bank. She obtains the savings accou

a_sh-v [17]

Answer:

The 95% confidence interval for the true mean length of the shafts is ($3402.08, $4142.75).

Step-by-step explanation:

A (1 - <em>α</em>)% confidence interval for true mean (<em>μ</em>), when the population standard deviation is known is:

$CI=\bar x\pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$

If the population standard deviation is not known, then the confidence interval for true mean is:

$CI=\bar x\pm t_{\alpha/2, (n-1)}\frac{s}{\sqrt{n}}$

A 95% confidence interval for true mean is an interval estimate of the population mean. The interval has 0.95 probability of consisting the true value of the population mean.

It is provided that the 95% confidence interval for mean, based on a sample of size 30 is ($3402.08, $4142.75).

This interval implies that the true mean value is between $3402.08 and $4142.75 with 95% confidence.

Thus, the 95% confidence interval for the true mean length of the shafts is ($3402.08, $4142.75).

7 0

4 years ago

The diameter of a circle is 3 cm. Find the circumference to the nearest tenth.

nika2105 [10]

Answer:

The answer is 9.4 cm.

Step-by-step explanation:

To solve for the circumference of the circle, use the circumference formula, which is C = 2 $\pi$ $r$ .

Next, in the problem, the circle has a diameter measure but no radius measure. To find the radius of this circle, divide the diameter (3 cm) by 2, and it will equal 1.5 cm. The radius is being divided by 2 because the radius of any circle is equal to half the diameter of the circle.

Then, plug in the information given from the problem into the formula, and the formula will look like C = (2) ( $\pi$ ) (1.5 cm).

Finally, solve the equation, and the answer is 9.4 cm.

8 0

3 years ago

If f(n)=5n what is the value of f(4)

LUCKY_DIMON [66]

20 the answer is 20 because you plug in 4 for n.

3 0

4 years ago

Read 2 more answers

It is given a polynomial f(x) = 2x³ + ax² - bx + 12, where a and b are constants. When f(x) is divided by x-2, the remainder is

VMariaS [17]

Answer:

Step-by-step explanation:

<em>(a).</em> 2( 2 )³ + a ( 2 )² - b ( 2 ) + 12 + ( 18 ) = 0

16 + 4a - 2b + 30 = 0

4a - 2b = - 46

<em>2a - b = - 23</em> ....... <em>( 1 )</em>

2 ( - 4 )³ + a ( - 4 )² - b ( - 4 ) + 12 = 0

- 128 + 16a + 4b + 12 = 0

16a + 4b = 116

<em>4a + b = 29</em> ........ <em>( 2 )</em>

<em>( 1 )</em> + <em>( 2 )</em>

6a = 6 , <em>a = 1</em>

4(1) + b = 29 , <em>b = 25</em>

<em>(b).</em> 2x³ + x² + 25x + 12 = 0

$x_{1}$ = <em>- 4</em> ( given: f(x) is divisible by x + 4 )

$x_{2}$ = <em>0.5</em>

$x_{3}$ = <em>3</em>

5 0

3 years ago

Read 2 more answers