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stealth61 [152]
2 years ago
8

Let f(x) = 3x² + 1 and g(x) = x +4. Find (f +g)(x) and (f -g)(x).

Mathematics
1 answer:
Artist 52 [7]2 years ago
6 0

Answer:

(f + g)(x) = 3x² + x + 5

(f - g)(x) = 3x² - x - 3

Step-by-step explanation:

(f + g)(x) → f(x) + g(x) → <u>3x² + 1</u> + <u>x + 4</u>

Combine like terms and you get: 3x² + x + 5

(f - g)(x) → f(x) - g(x) → <u>3x² + 1</u> - (<u>x + 4</u>)

Remember to distribute the neg. everything in the parentheses. Combine like terms and you get: 3x² - x - 3

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Can anyone please help me with 8th grade math? I will give BRAIN!!!
Anit [1.1K]

The given percentage scores are:

80 , 92 , 91 , 75 , 89 , 84 , 0 , 85

A. Calculate the average

So, the average = (sum of the scores)/(number of the scores)

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The number of the scores = 8

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The average = 596/8 = 74.5%

Does the average score really represent her abilities ?

No, because there is outlier which is ( 0 ) which mean it may be absent this test

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Which mean the average is less than the reasonable minimum score

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B. Brandee received 78% at the missed test

so, we will find the new mean:

The new sum of the scores = 80 + 92 + 91 + 75 + 89 + 84 + 78 + 85 = 674

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C. What different did 0% score make ?

So, 0% give us not accurate representation of the student abilities

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7 0
1 year ago
8. A banker's loan officer rates applications for credit. The rates are normally distributed with a mean of 200 and a standard d
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3 years ago
The carpet used in Parkers bedroom covers an area of 121 square feet. If the carpet is square, what is the length of each side o
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Step-by-step explanation:

Step 1 :

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Step 2 :

Since it is given that the carpet is square, the length of all sides are the same

The area is obtained by squaring the side. Hence to find the side from the given area we need to take the root of the area.

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Therefore side = √121 = 11 feet

Step 3 :

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