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sweet [91]
4 years ago
8

If (x+8) is a factor of f(x), which of the following must be true?

Mathematics
2 answers:
Helga [31]4 years ago
8 0

Answer:

C

Step-by-step explanation:

Given that (x + 8) is a factor of f(x), then x = - 8 is a root and thus

f(- 8) = 0

natulia [17]4 years ago
8 0

Answer:

Excellent! The correct answer is C. (3rd option) got my test right!

Step-by-step explanation:

Thank you! ;)

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If g(x)=7x²−4x−3 and h(x)=5x²−12x, find (h∘g)(1)<br><br><br>FIRST BEST ANSWER BRAINLIEST
AURORKA [14]

Answer: See below

Step-by-step explanation:

h\:\circ \:g=h\left(g\left(x\right)\right)

=5\left(7x^2-4x-3\right)^2-12\left(7x^2-4x-3\right)

=5\left(7x^2-4x-3\right)\left(7x^2-4x-3\right)-12\left(7x^2-4x-3\right)

=245x^4-280x^3-130x^2+120x+45-84x^2+48x+36

Simplify:

=245x^4-280x^3-214x^2+168x+81

6 0
3 years ago
Which statements about the system are true? Select two options.
kondor19780726 [428]

Answer:

The system consists of parallel lines, and the both lines have the same slope.

Step-by-step explanation:

The slope is the coefficient of x. (The coefficient of y should be 1)

When the slopes are equal, it means they are parallel.

8 0
3 years ago
Choose what the expressions below best represent within the context of the word problem. If Sarah is 24 years younger than her m
KIM [24]
Hello Kiddo. 

This question is a bit confusing to me, but I think I grasped the concept. 
1. x best represents Sarah's mom's age. 
2. x - 24 best represents Sarah's mom's age minus how much younger Sarah is than her mom. 
3. The expression would look a little like this:
2x-24 = 68
    + 24  +24
2x = 92 
/2     /2
x = 46.

Which means, Sarah is 22 and her mom is 46 years of age. 
If you need more clarification, I'd be more than happy to elaborate further. 
5 0
3 years ago
Read 2 more answers
plz help me. its " joseph runs 2/3 of a mile in 8 minutes. if joseph runs at that speed, how long will it take him to run 1 mile
Mandarinka [93]

Answer:

He runs 2/3 mile in 8 mins, he runs one mile in 12 mins

7 0
3 years ago
Read 2 more answers
5x-3-2x/7=24 solve for x
bearhunter [10]

Answer:

X=5.7

Step-by-step explanation:

5x-3-2x/7=24

We simplify the equation to the form, which is simple to understand  

5x-3-2x/7=24

Simplifying:

5x-3-0.285714285714x=24

We move all terms containing x to the left and all other terms to the right.  

+5x-0.285714285714x=+24+3

We simplify left and right side of the equation.  

+4.71428571429x=+27

We divide both sides of the equation by 4.71428571429 to get x.  

x=5.72727272727

7 0
3 years ago
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