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Bingel [31]
3 years ago
7

Which expression is equivalent to 3(x2 - 1) - (x2 - 7x + 10)?

Mathematics
1 answer:
alisha [4.7K]3 years ago
7 0

Answer:

2. 2x² + 7x - 13

Step-by-step explanation:

3[x² - 1] - [x² - 7x + 10]

3x² - 3 - x² + 7x - 10

2x² - 13 + 7x

The above answer is a bit written in reverse, which is the exact same result.

So, after performing the Distributive Property, from there, you can combine all like-terms, as done above.

** Now, just in case you are wondering why that -7 has been altered to its opposite, it is because although -7x does not have another like-term to pair up with, IT IS STILL HOOKED UP TO ANOTHER NEGATIVE, so that -7x is REALLY 7x.

I am joyous to assist you anytime.

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PLEASE HELP!!
Kryger [21]
B and D

In order to find out if it would, you have to use Pythagorean's Theorem

a squared(one of the smaller numbers) + b squared(second small number) = c squared(largest number)
8 0
3 years ago
Read 2 more answers
The first step when dividing 9m2 − 4m − 6 by 3m is shown. Which could be the next step? 3m − − 3m − − 3m − − 3m − −
Agata [3.3K]

Given:

Consider the below picture attached with this question.

The given expression is:

\dfrac{9m^2}{3m}-\dfrac{4m}{3m}-\dfrac{6}{3m}

To find:

The next step.

Solution:

We have,

\dfrac{9m^2}{3m}-\dfrac{4m}{3m}-\dfrac{6}{3m}

Cancel out the common factors.

=3m-\dfrac{4}{3}-\dfrac{2}{m}

Therefore, the correct option is D.

8 0
3 years ago
on February 18th from 9 a.m. until 2 p.m. the temperature goes from -14 degrees Fahrenheit to 36 degrees Fahrenheit what is the
galina1969 [7]
To find the total increase, we will subtract -14 from 36.
36--14=50
(A double negative is a positive.)
50 is your final answer.
3 0
3 years ago
Please help 15 points will give brainliest
torisob [31]

Answer:

Step-by-step explanation:

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m∠2 = (1/3) times of ∠1

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m∠2 = 24°

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3 years ago
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