3 years ago

Given: f(x) = x - 7 and h(x) = 2x + 3

Mathematics

1 answer:

alexgriva [62]3 years ago

7 0

Answer:

h(f(x)) = 2x -11

Step-by-step explanation:

h(f(x)) = h(x -7) = 2(x -7) +3 . . . . . use f(x) as the argument for function h

= 2x -14 +3 . . . . . . . eliminate parentheses; next, combine terms

h(f(x)) = 2x -11

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A rectangular photograph has an area of 65 square inches. If the length of the photo is 3 inches less than twice it's height, fi

tankabanditka [31]

A = L * H
A = 65
L = 2H - 3

65 = H(2H - 3)
65 = 2H^2 - 3H
-2H^2 + 3H + 65 = 0
(-Hh + 13)(H + 5) = 0

-2H + 13 = 0
-2H = -13
H = -13/-2
H = 6.5 <== height is 6.5 inches

H + 5 = 0
H = -5....this wont work because it is negative

L = 2H - 3
L = 2(6.5) - 3
L = 13 - 3
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3 years ago

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astraxan [27]

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