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Nataliya [291]
2 years ago
11

Which expression is equivalent to -3x+9? A.-3(x+9) B.-3(x-3) C.-3(x+12) D.3(-x-3)

Mathematics
1 answer:
irina [24]2 years ago
4 0
<h3>Answer:  Choice B</h3>

Explanation:

Use the distributive property to pull out the -3

When going in reverse like this, we divide each term by -3

-3x/(-3) = x

9/(-3) = -3

So -3x+9 = -3(x-3)

We can verify this by multiplying the -3 outside with each term inside

-3 times x = -3x

-3 times -3 = 9

This shows how -3(x-3) turns into -3x+9 again.

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One hall can accommodate 65 people. How many halls are required to accommodate 520 people? ​
Mashcka [7]

8 halls would be required to accommodate 520 people in the hall.

As we know that a hall can accommodate 65 people.

To determine the number of hall required for 520 people,

first we need to find that how many halls would be required for one person,

So, we will divide the 1 by 6 to find :

The number of one person accommodate = 1/65 Hall

Then, 520 people required to accommodate = 1/65 × 520

                                                                      = 8 Halls.

[Accommodate: to have enough space for somebody/something, especially for a certain number of people]

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1 year ago
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f(g(h(x))) = f(g(\sqrt{x})) = f(\sqrt{x} - 8) = (\sqrt{x} - 8)^4 + 8

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