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belka [17]
3 years ago
10

Help me please. I need it bad

Mathematics
2 answers:
Bess [88]3 years ago
7 0
Whenever it says g(#) you just substitute whatever is in there for x. So 2(2)^2-2(2)= 8-4=4. so x=4
Zigmanuir [339]3 years ago
3 0
Since g(2) has an x value of 2, plug in 2 for x. Do 2(2)squared-2(2). That would be 4
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F(x)=-2x-1 and g(x)=x^2-1. Find (fog)(-5).
serg [7]

Answer: - 49

Step-by-step explanation:

f(x) = -2x - 1

g(x) = x^{2} - 1

fg(x) = f (x^{2} - 1) , we just put in the value of g(x) , the next thing is to substitute x^{2} - 1 for the value of x in f(x) , that is

fg(x) = -2(x^{2} - 1) - 1

fg(x) = -2x^{2} + 2 - 1

fg(x) = -2x^{2} + 1

Therefore : fg(-5) means we will substitute -5 for x in fg(x) , that is

fg(-5) = -2 ((-5)^{2} + 1

fg(-5) =  -2(25) + 1

fg(-5) = -50 + 1

fg(-5) = -49

7 0
3 years ago
Prime factors of 20 i dont know this question
dem82 [27]

Answer:

 2 x 2 x 5,

Step-by-step explanation:

20 = 1 x 20

        2 x 10

        4 x 5

Factors of 20= 1, 2, 4, 5, 10, 20.

Prime factors are = 2 x 2 x 5,

6 0
4 years ago
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Use trigonometry to find the unknown side (round to 1 decimal)​
artcher [175]

Answer:

1 1 1 1

Step-by-step explanation:

5 0
3 years ago
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I will give the BRAINIEST
IceJOKER [234]

Answer:

It's f(x)=10x+8

Step-by-step explanation:

Because it says every hour not every half hour and the graph changes by 0.5 instead of 1 so m would equal 10

3 0
3 years ago
The question goes like this:
Orlov [11]

Answer:

You have 90 pages left.

Step-by-step explanation:

1/4 × 120 = 30 pages read

Therefore

120- 30

=90 pages left to read

5 0
3 years ago
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