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galben [10]
3 years ago
7

F(x) = square root x+9 ; g(x) = 8x - 13

Mathematics
1 answer:
denpristay [2]3 years ago
5 0
Take the value of g(x) and plug it into the x inside the radicand for F(x).

F(g(x)) = sqrt{8x - 13 + 9}

F(g(x)) = sqrt{8x - 4}

Done!
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lynn, jude and anne were given the function f(x)=-2x^2+32, and they were asked to find f(3). lynns answer was 14, judes answer w
AfilCa [17]
The only thing we need to here to find who is correct is evaluate the function f(x)=-2 x^{2} +32 at x=3. To do that we are going to replace x with 3 in the function:
f(x)=-2 x^{2} +32
f(3)=-2 (3)^{2} +32
f(3)=-2 (9) +32
f(3)=-18+32
f(3)=14

We can conclude that Lynn is correct. f(3) is indeed 14.
6 0
3 years ago
Which describes the graph of y= -(x + 6)² + 6?
Eddi Din [679]

Answer:

A

Step-by-step explanation:

Since x has a negative coefficient, the graph opens downwards meaning that it has a maximum.

The vertex formula is y = a(x - h)^2 + k so the coordinate must be (-6, 6).

4 0
2 years ago
Read 2 more answers
Find a . b if a=(2, -8) and b = (-1, 4).<br> a. -30<br> b. (1, -4)<br> c. -34<br> d. (-2, -32)
Luden [163]

Answer:

(2,-8)*(-1,4)

a*b

the answer is (-2,-32)

(2)*(-1)=(-2)

(-8)*(4)=(-32)

Step-by-step explanation:

hope this helps you :)

7 0
4 years ago
Help pleaseeeee it’s urgent!!!
Ad libitum [116K]

Answer:

(2,-7)

Step-by-step explanation:

Use the midpoint formula! (Attached is a picture of it!)

1) Plug in the values:

(5-1)/2,(-6+-8)/2

2) Simplify:

4/2,-14/2

3) Solve:

(2,-7)

6 0
4 years ago
What is the solution of the system? Use the elimination method. 2x+y=206x−5y=12 . Enter your answer in the boxes.
worty [1.4K]
2x+y=206x-5y=12
y+204x-5y=12
6y=204x=12
8 0
3 years ago
Read 2 more answers
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