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Kipish [7]
3 years ago
14

PLEASE HELP I AM SO LOST AND NEED AN EXPLANATION.

Mathematics
2 answers:
Lady_Fox [76]3 years ago
7 0

Answer:

The first one f(2)

Step-by-step explanation:

If x is 2, f(x) is -1

Alex73 [517]3 years ago
4 0

Answer:

A, f(2) is the answer because it fits into the requirements.



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2(9x - 1) = 99-7(3 - 4x)<br> help please
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The perimeter of a rectangle is 338, if the ratio of the length to the width is 8:5, find the length
STALIN [3.7K]
Let the length be 8x and the width = 5x, then
Perimeter = 2(length + width) = 2(8x + 5x) = 2(13x) = 26x
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3 years ago
(5a^2+6a+2)-(7a^2-7a-5)
krok68 [10]

For this case we must simplify the following expression:(5a^ 2 + 6a + 2) - (7a^ 2-7a-5) =

We eliminate the parentheses taking into account that:

- * + = -\\- * - = +

So:

5a ^ 2 + 6a + 2-7a ^ 2 + 7a + 5 =

We add similar terms taking into account that:

Equal signs are added and the same sign is placed.

Different signs are subtracted and the major sign is placed.

5a ^ 2-7a^2 + 6a + 7a +2 +5 =\\-2a ^ 2 + 13a + 7

Answer:

-2a ^ 2 + 13a + 7

8 0
4 years ago
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