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taurus [48]
3 years ago
12

Given f (x)=2x-10 for which value of x that f(x) = 8Help please!​

Mathematics
1 answer:
Verizon [17]3 years ago
8 0

Answer:

x=9

Step-by-step explanation:

Plug in 8 for f(x)

8=2x-10

Isolate the x term by moving the 10

18=2x

Isolate the variable

9=x

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the side length ofthe square porch behind macis house is (3x + 2) feet. The porch has a perimeter of (14x - 2) feet. What are th
andriy [413]

Answer:

The porch is 17 ft by 17 ft

Step-by-step explanation:

The perimeter of a square is

P = 4s where s is the side length

P = 4( 3x+2)

P = 12x+8

We know P = 14x-2

14x-2 = 12x+8

Subtract 12x from each side

14x-2 -12x = 12x+8-12x

2x -2 = 8

Add 2 to each side

2x-2 +2 = 8+2

2x= 10

Divide by 2

2x/2 = 10/2

x = 5

The side  is 3x+2

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                   17

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5 0
3 years ago
Deb deposited $70 in a savings account earning 10% interest, compounded annually.
bija089 [108]

Answer:

Deb will have $93.17 in 3 years

Step-by-step explanation:

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FV = 70(1+0.1)^3

FV = 70(1.331)

FV = 93.17

7 0
3 years ago
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Answer:

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Step-by-step explanation:

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2 years ago
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