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Crazy boy [7]
3 years ago
11

Simplify the following expression. -4(2x +6) +x2 -9

Mathematics
2 answers:
kompoz [17]3 years ago
7 0

Step-by-step explanation:

<u>Use the Distributive Property:</u>

<u />-8x-24+x^2-9

<u>Combine Like-Terms and correctly format:</u>

<u />x^2-8x-33

nevsk [136]3 years ago
6 0

Answer:

x² - 8x - 15

Step-by-step explanation:

-4(2x + 6) + x² - 9

= -8x - 24 + x² - 9

= x² - 8x - 33

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Answer:

\frac{1}{4} n - 2

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A regular octagon has an apothem measuring 10 in. and a perimeter of 66.3 in. What is the area of the octagon, rounded to the ne
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Answer:

332in^2

Step-by-step explanation:

The area of a regular polygon is calculated using the formula;

Area=\frac{1}{2}ap

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We substitute into the formula to obtain;

Area=\frac{1}{2}\times10\times66.3in^2

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To the nearest square inch, we have;

Area=332in^2

4 0
3 years ago
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What is 2/3 plus 2 1/3?
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What is the distance between -45 and 65
tatyana61 [14]

Answer:

110

Step-by-step explanation:

What is the Difference between -45 and +65? In other words, what is the Difference between negative 45 and positive 65?

To solve this math problem, start by picturing a horizontal number line that starts with negative infinity on the left and ends with positive infinity on the right:

∞ ..... -3, -2, -1, 0, +1, +2, +3, .... ∞

The Difference between -45 and +65 is the distance between -45 and +65 on our number line above. Thus, the Difference between two numbers will always be a positive number.

It is a two-step process to calculate the Difference between -45 and +65. Step 1 is to subtract +65 from -45, and Step 2 is to find the absolute value of the Step 1 answer. Here is the math to illustrate better:

(-45) - (+65) = -110

|-110| = 110

That's it! The Difference between -45 and +65 is as follows:

110

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