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Crazy boy [7]
2 years ago
11

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

Mathematics
2 answers:
kompoz [17]2 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]2 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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3 years ago
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2 years ago
2. In a given population of two-earner male-female couples, male earnings have a mean of $40,000 per year and a standard deviati
Kobotan [32]

Answer: $85,000

Step-by-step explanation:

Given : In a given population of two-earner male-female couples, male earnings have a mean of $40,000 per year and a standard deviation of $12,000.

\mu_M=40,000\ \ ;\sigma_M=12,000

Female earnings have a mean of $45,000 per year and a standard deviation of $18,000.

\mu_F=45,000\ \ ;\sigma_F=18,000

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Then, the mean of C will be :-

\mu_c=\mu_M+\mu_F\\\\=40,000+45,000=85,000

Hence, the mean of C = $85,000

8 0
3 years ago
Michael is packing his bags for his vacation. He has 5 unique shirts, but only 4 fit in his bag. How many different groups of 4
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Answer:

12

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I think you have to use the product rule for counting- which is where you multiply the two numbers. I'm not sure if this is right but I hope I helped

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