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erma4kov [3.2K]
3 years ago
14

Jessica purchased a DVD that was on sale for 12% off the sales tax in her county was 3% let Y represent the original price of th

e DVD write an expression that can be used to determine the final cost of the DVD
Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
4 0

Answer:

y - 12% - 3% = x

Step-by-step explanation:

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Assume that human body temperatures are normally distributed with a mean of 98.19 and a standard deviation of 0.61
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Ok I'm assuming that know what??

Step-by-step explanation:

8 0
3 years ago
Find the surface area of the figure below. Round to the nearest tenth if necessary.​
Contact [7]

Answer:

173.4 cm^2

Step-by-step explanation:

Surface area of the cone=pi*r*l+pi*r^2=pi*(4)*(9.8+4)=173.4 cm^2

6 0
3 years ago
He cost, in millions of dollars, of building a three-story high school in new york state was estimated to be c(x) = 2.1 + 0.12x
ratelena [41]

Given cost function is

c(x) = 2.1 + 0.12x - 0.0001x^2 (20 ≤ x ≤ 400)

where x is the number of thousands of square feet

total revenue will be $0.2 million dollars per thousand square feet

Revenue is 0.2 millions per thousand square feet. we know x is the number of thousand of square feet

So R(x) = 0.2x

We know Profit = Revenue - Cost

P(x) = R(x) - C(x)

P(x) = 0.2x - (2.1 + 0.12x - 0.0001x^2)

P(x) = 0.2x - 2.1 - 0.12x + 0.0001x^2)

combine like terms

P(x) =-2.1 + 0.08x + 0.0001x^2

Profit function is

P(x) =0.0001x^2 + 0.08x - 2.1


5 0
4 years ago
Help!! check screenshot below.
Crazy boy [7]

Answer:

x < 7

Step-by-step explanation:

7x < 49 (Given)

x < 7 (Divided 7 on both sides)

5 0
3 years ago
Read 2 more answers
The ratio of boys to girls in a school is 9:11. If there are 400 pupils in the school,how many boys are there​
Anvisha [2.4K]
I believe its 180.

I have seen this question before and the amount of girls was 220, so 400-220 is 180

Hope this helps :)
5 0
3 years ago
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