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3 years ago

Which equation represents the total price (p) paid when buying books (b) that cost $3.99 each? How much do 13 books cost?

Mathematics

2 answers:

Mariana [72]3 years ago

8 0

Answer:

Your answer is D p=3.99;$51.87

Step-by-step explanation:

Vesnalui [34]3 years ago

3 0

Answer:

The answer is D. p = 3.99b; $51.87.

Step-by-step explanation:

In this case first we have to represent the equation and then find the total price of the books in order to find the correct answer. This is:

Total price = p

Number of books = b

Cost of each book = $3.99

This is a case of multiplication were we have to multiply the number of books by the cost of each one to find the total price, this is:

$p=3.99*b$

Having this we can calculate the total price of buying 13 books, this is:

$p=3.99*13=51.87$

The total price of buying 13 books at $3.99 is $51.87.

The answer is D. p = 3.99b; $51.87.

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Two supplementary angles have measures of 9x degrees and 3x degrees. What is the measure of the longer angle?

strojnjashka [21]

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12/12x=180/12
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9x=9(15)=135°

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2 years ago

Esther drove to work in the morning at an average speed of 45 miles per hour. She returned home in the evening along the same ro

nydimaria [60]

The key is Esther travelled the same distance - x - in both her morning and evening commute.

45(time she took in the morning, or p) = x
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Therefore 45(p) = 30(q), or divide both sides by 5 and get 9(p) = 6(q). I know you can divide it further, but these numbers are small enough and it's not worth the time.

Since the whole trip took an hour, (p + q) = 60min, and so, p = 60-q.

Therefore 9(60-q) = 6q or 540-9q = 6q. So 540 = 15q, which makes q = 36. If q = 36, then by (p+q)=60, p (the time she took in the morning) must equal 24.

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7 0

3 years ago

Read 2 more answers

If a line falls on the points (6,8) and (1.5), what is it's slope?

Troyanec [42]

Answer:

3/5

Step-by-step explanation:

8-5/6-1

3/5

7 0

3 years ago

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MArishka [77]

15:4.

Step-by-step explanation:

1 hour = 60 min

3 hours = 60 x 3 = 180 min

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180/48

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Therefore, the simplest form of the ratio will be 15:4

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3 years ago

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DedPeter [7]

Answer:

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Step-by-step explanation:

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V = 1/3 * 5 * 4 = 20/3

20/3 or 6.67 or 6 $\frac{2}{3}$

4 0

1 year ago