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3 years ago

Evaluate A 2-B 2 for A = 3 and B = -4. -7 -2 25

Mathematics

1 answer:

kogti [31]3 years ago

6 0

$A^2-B^2$
Substitute the values of A = 3 and B = -4 to the expression:
$3^2-(-4)^2=9-16=-7$

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3 years ago

a pack rat has 130 piglets and 110 books. She wants to maintain this ratio in her collection but needs to sell some of her items

bija089 [108]

The number of items she should sell from her collection is 24

<h3>How to determine the number of items she should sell from her collection?</h3>

From the question, we have the following parameters that can be used in our computation:

Ratio = Piglets : Books

For 130 piglets and 110 books, we have the following representations

Ratio = 130 : 110

Also, for 13 piglets, we have the following representations

Ratio = 13 : Books

Using the above as a guide, we have the following:

13 : Books = 130 : 110

This can also be rewritten as

Books : 13 = 110 : 130

Multiply the second ratio by 1/10

So. we have

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By comparison, we have

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Hence, the number of items is 24

Read more about ratios at

brainly.com/question/12024093

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1 year ago

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aleksandrvk [35]

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3 years ago

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