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svlad2 [7]
3 years ago
10

Mr. Sanchez bought some book s at the book sale, including 15 paperbacks books. 75% of all the books he bought were paperbacks.

How many books did Mr. Sanchez buy in all
Mathematics
1 answer:
goblinko [34]3 years ago
4 0

Answer:

Sanchez bought 20 books.

Step-by-step explanation:

Represent the total number of books purchased by t.  Then:

0.75n = 15.  Thus, n = 20.

Sanchez bought 20 books.

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Angelina wins money in a competition. She is given the choice as to how she is paid.
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Answer:

  • Choice 1
  • 20 days

Step-by-step explanation:

You are being asked to compare the value of a growing infinite geometric series to a fixed constant. Such a series will always eventually have a sum that exceeds any given fixed constant.

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<h3>a)</h3>

Angelina will get more money from the Choice 1 method of payment. The sequence of payments is a (growing) geometric sequence, so the payments and their sum will eventually exceed the alternative.

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For a first term of 1 and a common ratio of 2, the sum of n terms of the geometric series is given by ...

  Sn = a1×(r^n -1)/(r -1) . . . . . . . . . . series with first term a1, common ratio r

We want to find n such that ...

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The total Angelina receives from Choice 1 will exceed $1,000,000 after 20 days.

8 0
2 years ago
Taylor wants to install new carpet in her living room. The room length is 15 ft and the width is 15 ft. If the cost of the carpe
irga5000 [103]

Answer:

$1,800.

Step-by-step explanation:

15 x 15 = 225

225 x 8 = 1800

Feel free to let me know if you need more help! :)

7 0
3 years ago
The equation of a graph is 4x - 3y = 5. What is the x-intercept?
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3 years ago
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