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Simora [160]
3 years ago
11

Let ​f(x)=x2−4 and ​g(x)=7−x. Perform the composition or operation indicated. ​(fg)(8​)

Mathematics
1 answer:
Dominik [7]3 years ago
3 0

Answer:

(f\circ g)(8)=-3

Step-by-step explanation:

<u>Composite Function</u>

Given f(x) and g(x) real functions, the composite function named (f\circ g)(x) is defined as:

(f\circ g)(x)=f(g(x))

For practical purposes, it can be found by substituting g into f.

The functions are defined as follows:

f(x)=x^2-4

g(x)=7-x

To find (f\circ g)(8), we evaluate g in x=8 and then apply the composition formula.

g(8)=7-8=-1

(f\circ g)(8)=f(g(8))

(f\circ g)(8)=f(-1)

(f\circ g)(8)=(-1)^2-4=1-4

\boxed{(f\circ g)(8)=-3}

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A cyclist rides his bike 18 miles per hour what is the speed in minutes? How many miles will the cyclist travel in 10 minutes
Crazy boy [7]

Answer:

Step-by-step explanation:

18 miles..................60 min

18/60= 0.30 miles/ min

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2 years ago
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Consider the graph of the linear function h(x) = –6 + x. Which quadrant will the graph not go through and why?
Lesechka [4]
H ( x ) = - 6 + x
m = 1 ( the slope )
b = - 6 ( y - intercept )
x - intercept: 
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Answer:
B ) Quadrant II, because the slope is positive and y-intercept is negative.
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3 years ago
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A rectangle is twice as long as it is wide. If its area is 50 sq. yd., find the length.
sertanlavr [38]
A = L * W
A = 50
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50 = W(2W)
50 = 2W^2
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25 = W^2
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5 0
2 years ago
What is the probability that at least one of a pair of fair dice lands of 5, given that the sum of the dice is 8?
o-na [289]

Answer:

0.40

Step-by-step explanation:

to find out the probability that at least one of a pair of fair dice lands of 5, given that the sum of the dice is 8

Let A = sum of dice is 8

B = one lands in 5

P(B/A) = P(AB)/P(A) by conditional probability

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So (5,3) or (3,5)

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= n(AB)/n(A)

=\frac{2}{5} =0.40

4 0
3 years ago
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