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Anna11 [10]
3 years ago
6

Phoebe spent $12.87 at the bookstore. She paid with a $20 bill. How much is her change?

Mathematics
2 answers:
Ksju [112]3 years ago
8 0

Answer:

7.13 is the right answer

Step-by-step explanation:

beeeeeeechhhhhhh this is the right anwer learn math

notka56 [123]3 years ago
5 0

Answer:

7.28 in change

Step-by-step explanation:

When she used 20 bucks it gave her 7.28 cents.

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An important application of regression analysis in accounting is in the estimation of cost. By collecting data on volume and cos
Amanda [17]

Answer:

Y = 7.60X + 1246.67

Step-by-step explanation:

Given the data:

Production Volume (units) Total Cost ($)

400 4000

450 5000

550 5400

600 5900

700 6400

750 7000

Using technology, the linear regression calculator, the regression model obtained by fitting the data is :

Y = 7.60X + 1246.67 ; which is the model giving the relationship between Production volume, x and total cost, y.

Slope = 7.60

Intercept = 1246.67

6 0
3 years ago
Suppose that the dollar cost of producing x radios is c(x) = 400 + 20x - 0.2x 2. Find the marginal cost when 30 radios are produ
My name is Ann [436]
C(x) = 400 + 20x - 0.2x²

c(30) = 400 + 20(30) - 0.2(30)²

= 400 + 600 - 0.2(900)
= 1000 - 180
= 820

It costs $820 when 30 radios are produced. 

Marginal cost is how much it would cost to make one MORE of the same product so now we find how much it costs to produce 31 radios and compare the two. 

c(31) = 400 + 20(31) - 0.2(31)²

= 400 + 620 - 0.2(961)
= 1020 - 192.2
= 827.8 or ≈828.

Now we find the difference which means we subtract the two. 

828 - 820 = 8. 

Your marginal cost is $8. 

To compare we can also do 29 radios. 

c(29) = 400 + 20(29) - 0.2(29)² = 811.8 or ≈812

820 - 812 = 8. 
7 0
3 years ago
Find two consecutive whole numbers that 52 lies between.
tensa zangetsu [6.8K]
<span>Think about which perfect squares lies on the immediate left of 52 and which lies on the immediate right of 52. 49 ---- 52 ------- 64 After that, take the square roots of each of the three numbers.</span>
3 0
3 years ago
Read 2 more answers
14 5 18 24 15 28 34 __
Volgvan
This sequence seems to apply -9, +13, +6 repeatedly.
So after the 34, the -9 has to be applied. The next number would be 25.
5 0
3 years ago
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Https://brainly.com/question/22781366 :( immmmmma fail
Goryan [66]

Answer:

2 dollars and 25 percent of the virgin stock market will hold a single hand

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Step-by-step explanation:

7 0
3 years ago
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