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enyata [817]
3 years ago
8

3x2 + 5x - 7(x2 + 4)

Mathematics
2 answers:
goldenfox [79]3 years ago
5 0

Answer:

-4x^2+5x-28

Step-by-step explanation:

Expand -7(x^2 +4) = 3x^2+5x-7x^2-28

Simplify 3x^2+5x-7x^2-28 = -4x^2+5x-28

Lelechka [254]3 years ago
3 0

Answer: -4x² + 5x - 28

Step-by-step explanation:

<u>Given expression</u>

3x² + 5x - 7 (x² + 4)

<u>Expand parentheses and apply the distributive property</u>

=3x² + 5x - 7x² - 28

<u>Combine like terms</u>

=(3x² - 7x²) + 5x - 28

=\boxed{-4x^2+5x-28}

Hope this helps!! :)

Please let me know if you have any questions

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The local gym holds three 45-minute workout sessions and two 30-minute sessions each week. Judy attended all of the sessions thi
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The local gym holds three 45-minute workout sessions and two 30-minute sessions each week. Then the, total number of minutes Judy worked out for the week was 155 minutes.

We are to determine the total number of minutes Judy worked out for the week.

The gym holds three 45-minute workout sessions and two 30-minute sessions each week

So,

We can write,

The total number of minutes the gym holds workout sessions is

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Also, from the information,

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The total number of minutes Judy didn't attend is

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1 year ago
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Substitute 12 for FT in the above ratio

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Express as fraction

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This gives

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Divide 12 by 2

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The measure of FQ is calculated using:

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Substitute 12 for FT, and 6 for TQ

\mathbf{FQ = 12 + 6}

Add 12 and 6

\mathbf{FQ = 18}

Hence, the measure of FQ is 18, while the measure of TQ is 6

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