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Elden [556K]
3 years ago
6

Alana and Petra go to a used book sale, where every book is the same price. Alana buys 5 books and Petra buys 4 books. They run

into their friend Angus,who really loves to read, and discover that he has bought 19 books. Angus received a $10 discount, but he still spent $5 more than Alana and Petra combined. How much does one book cost?
Mathematics
1 answer:
antiseptic1488 [7]3 years ago
5 0
Alana and Petra bought 9 books combined.
Angus bought 19 books and had a $10 discount.
Angus spent $5 more than Alana and Petra combined.

This means that the price of 19 books is $15 more than the price of 9 books. 19 books is 10 books more than 9 books.

Giving you 10 books = $15, 1 book = $1.50
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3 years ago
Solve for xx. Round to the nearest tenth, if necessary. ​
Anna [14]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
Read 2 more answers
Simplify the expression below:
kifflom [539]

Answer:

C. -7x^2 - 28

Step-by-step explanation:

Firstly simplify the bracket before doing anything;

4x(3x - 7) = 12x^2 - 28x

then go back to the question and substitute the expression(12x^2 - 28x) on the bracket and then work out the question;

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(12x^2 - 19x^2) - 28x

; -7x^2 - 28x

6 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Cfrac%20%7B%205%20x%20%5E%20%7B%202%20%7D%20-%2029%20x%20-%206%20%7D%20%7B%203%20x%20%5E%20%
olganol [36]

Answer:

Step-by-step explanation:

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4 0
3 years ago
Write the equation of the line through (0, −2) and (3, 13) in point-slope form. The line through (0, −2) and (3, 13) in point-sl
Strike441 [17]

Answer:

  • y + 2 = 5x

Step-by-step explanation:

<u>Point-slope form: </u>

  • <em>y - y1 = m(x - x1)</em>

<u>Slope formula:</u>

  • <em>m = (y2 - y1)/(x2 - x1)</em>

<u>Given points:</u>

  • (0, -2) and (3, 13)

<u>Finding the slope:</u>

  • m = (13 - (-2))/(3 - 0)
  • m = 15/3
  • m = 5

<u>Using point 1</u>

  • y - (-2) = 5(x - 0)
  • y + 2 = 5x

4 0
3 years ago
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