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Greeley [361]
3 years ago
10

For what value of x does 3^2x=9^3x-4

Mathematics
1 answer:
Andrei [34K]3 years ago
8 0

Answer:

x = 2.

Step-by-step explanation:

3^2x = 9^(3x - 4)

9^3x-4 = 3^2x

(3^2)^(3x-4) = 3 ^2x

3^6x-8 = 3^2x

6x - 8 = 2x

4x = 8

x = 2 (answer).

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The length of a rectangular garden is 2 feet more than twice it's width. If the area is 40 square feet, how much fencing would b
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Answer:

w =4 ft and l =10 ft

Step-by-step explanation:

Let w = width

l = 2w+2

A = l*w

A = (2w+2)(w)

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Distribute

40 = 2w^2 +2w

Subtract 40

0 = 2w^2 +2w - 40

Dividing each side by 2

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0 = (w+5) (w-4)

Using the zero product property

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w= -5  w=4

Since we cant have a negative length

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l = 2w+2 = 2(4)+2 = 8+2 =10

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Answer:

D. f(-3) = 11

Step-by-step explanation:

When f(x) is divided by x+3, you get a quotient g(x) and a remainder of 11:

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