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Mumz [18]
3 years ago
9

A store has a sale on pet supplies. The price ,P, of each item is marked down 25%. The store also offers a coupon for $5 off whe

n you check out. Write an expression that represents the final price after a customer uses the coupon.
Mathematics
1 answer:
artcher [175]3 years ago
8 0

Answer:

0.7125*P

Step-by-step explanation:

The original price of a product is P.

The products are marked down 25%, so the sale price of the products are

75% of P = 0.75*P

Then, in the check out, the store offers a coupon for 5% off, so the sale price will decrease 5%, that is, will be multiplied by 0.95:

Final price = 0.75*P * 0.95 = 0.7125*P

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3x + 7 + 2(4x+1) = 3(x-1) - 4

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Step-by-step explanation:

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3 years ago
A quantity b varies jointly with c and d and inversely with eWhen b is 18, c is 4, d is 9, and e is 6What is the constant of var
777dan777 [17]

Answer:

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Step-by-step explanation:

we know that b varies jointly with c and d

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b∝c∝d

and b varies inversely with e, so

b∝\frac{1}{e}

and i will call the constant of variation k, this way we can make an equation for b in the following form:

b=k\frac{cd}{e}

this satisfy that b varies jointly with c and d (if b increases, c and d also increase) and inversely with e (if b increases, e decreases)

we know that when b is 18, c is 4, d is 9, and e is 6:

b=18\\c=4\\d=9\\e=6

substituting this in our equation for b:

b=k\frac{cd}{e}\\ 18=k\frac{(4)(9)}{6}

and we solve operations and clear for the constant of variation k:

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3 years ago
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Triangle DEF has sides of length x, x+3, and x−1. What are all the possible types of DEF?
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Triangle DEF is scalene

Must click thanks and mark brainliest

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