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elixir [45]
2 years ago
14

Given f(x)= x3 and g(x) = 2x + 7, express (fºg)(x)'as a function of x.

Mathematics
1 answer:
vodomira [7]2 years ago
7 0

Answer:

(f∘g)(x)=(2x+7)^3

Step-by-step explanation:

substitute g(x) in f(x)

(f∘g)(x)=f(g(x))=f(2x+7)=(2x+7)^3=(2x+7)^3

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Over the last 3  evenings, Keisha received a total of 81  phone calls at the call center. The first evening, she received 6  few
tensa zangetsu [6.8K]

Answer:

First: 15

Second: 21

Third: 45

Step-by-step explanation:

In order to create the equation we need to represent the evenings with an alebraic term, in thsi case we are going to represent the second evening with an X

Second evening:x

The first night she got 6 fewer calls than the second: Second-6=x-6

The third night she received 3 times the first: 3(first night)=3(x-6)

The equation is First Night plus second night plus third night equals 81.

First+second+third=81\\x+(x-7)+3(x-6)=81\\x+x-7+3x-18=81\\5x=81+21+6\\5x=105\\x=\frac{105}{5} \\x=21

So the first evening he received 15 calls, the second he received 21 and the third one he received 45.

8 0
3 years ago
The sixth term is 22 and the common difference is 6 what is the 15th term?
matrenka [14]

Answer:

76

Step-by-step explanation:

I made a chart to simplify it

1 | -8

2| -2

3| 4

4| 10

5| 16

6| 22

7| 28

8| 34

9| 40

10| 46

11| 52

12| 58

13| 64

14| 70

15| 76

5 0
3 years ago
What is the definition of congruent
Alinara [238K]

Answer:

more ... The same shape and size, but we are allowed to flip, slide or turn. In this example the shapes are congruent (you only need to flip one over and move it a little). Angles are congruent when they are the same size (in degrees or radians). Sides are congruent when they are the same length.

Step-by-step explanation:

happy to help ya:)

3 0
3 years ago
Read 2 more answers
Sometimes life is tricky.
skad [1K]

thanks for the message !!

3 0
2 years ago
Read 2 more answers
9. The equation y = x2 - 1 is
SashulF [63]
It depends on whether or not you have written the question correctly. If the 2 is an exponent, it needs to be preceded by a ^. Otherwise, it is considered a multiplier.
x^2 = x²
x2 = x⋅2

y = x²-1 is nonlinear and nonproportional.
3 0
3 years ago
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