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Shtirlitz [24]
3 years ago
13

There were 287 music books and 134 science books in the store. After some books were sold there are 159 books left. How many boo

ks were sold?
Mathematics
2 answers:
stiks02 [169]3 years ago
4 0

Answer:

262 books sold

Step-by-step explanation:

This is a very vague word problem, but if it truly is just asking the amount of books sold (regardless of music or science), here's how to get the answer:

1. 287+134=421 - first you want to add together the two types of books to get the total amount of books in the store

2. 421-x=159 - create an equation and solve.

3. -x=-262 - follow order of operations and subtract 421 on both sides in order to isolate the variable

4. x=262 - divide each side by -1 to make the variable positive.

If you'd like an easier way, you can just:

1. 421-159=262 - it's easier, but my math teacher would count us wrong if we didn't do equations a specific way. Good luck!

Black_prince [1.1K]3 years ago
4 0
There were 262 books sold.
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What group of numbers does -2 belong to?
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Answer: Integers and Rational Numbers

Explanation: -2 is an integer because integers include positive an negative numbers. It would not be a whole number or a Naural number because both of those sets only include positive numbers. Here’s a better explanation:

Natural numbers: Natural Numbers are like (1,2,3....). They only include positive numbers. Therefore, -2 does not belong in this category.

Whole Numbers: Whole Numbers are like (0,1,2,3....). They include all the natural numbers with 0. Therefore, -2 does not belong in this set.

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3 0
3 years ago
Find the value if x and if nessesary express your answer as a simplified radical
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10 rad 3 / 2

Step-by-step explanation:

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Jeff has two sticker-printing machines. Each machine can print 42 stickers per minute. On day 1, only the first machine was used
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c 89+42x+42y

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On day 1 :

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2 years ago
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