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Mathematics

2 answers:

kiruha [24]3 years ago

5 0

The answer to this is D

algol [13]3 years ago

3 0

Since you have a 10 x 10 grid, there are 100 squares which then equal 1 percent each (since each square is 1/100 of the grid). To have 60% you would need 60 squares shaded.

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Which of the following statements have the same result? Explain each step in solving each one.

QveST [7]

First: f(2) is same as f(x=2) so all we have to do is to express x=2 in f(x)
f(2) = 3*2 + 2 = 8

Second
f^(-1) (3) is inverse function. first we solve f(x) for x.
let f(x) be equal to some variable m
m = (2x -7)/3
3m = 2x - 7
2x = 3m + 7
x = (3m + 7)/3
now we write:
f^-1(x) = (3x + 7)/3

x=3
f^-1(3) = 16/3

Third
2y + 14 = 4y - 2
we just solve for y
2y = 16
y = 8

Now we take that f(x) = y because we both write to be the functions of x

that means that First and third have same result.

4 0

3 years ago

If f(x) = x^2 - 2x and g(x) = 6x + 4, for what value of x does (f + g)(x) = 0?

larisa86 [58]

Answer:

x = -2

Step-by-step explanation:

$f(x) =x^2 -2x\:\: and \:\: g(x) = 6x + 4\\(f+g)(x) = f(x) + g(x) \\(f+g)(x) = x^2 -2x+ 6x + 4\\(f+g)(x) = x^2+4x + 4\\(f+g)(x) = (x+2)^2\\ 0 = (x+2)^2...[\because (f+g)(x) =0]\\0 = x+2\\\therefore x = -2$