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crimeas [40]
3 years ago
14

Determine whether each pair of functions are inverse functions. 1) f(x)=10x+9/8, g(x)=25x-9/10 2) f(x)=x-9, g(x)=x+9

Mathematics
1 answer:
nevsk [136]3 years ago
4 0
D is your answer I think
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3 years ago
The diagram shows a rectangle. The area of the rectangle is 310 m². Work out the value of w when 5x-9 is the length and 3x+7 is
Simora [160]

Answer:

w = 10

Step-by-step explanation:

First we take the two values for the breadth of the rectangle

So:

5x - 9 = 3x + 7

now we solve this equation as follows:

5x - 3x = 9 + 7

2x = 16

x = 8

now that we have found the value for x, we can substitute it in the equation, 5x - 9,or in the equation, 3x + 7.

when we substitute x in any of these equations, we get

5(8) - 9 = 31

3(8) + 7 = 31

now that we have the value for the breadth we can form the following equation:

31 × w = 310

31w = 310

w = 310/31 = 10

3 0
2 years ago
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harkovskaia [24]

Answer:

\\3 percent of 900 = 27 \\900 + 27 = 927 \\ 927 * 36 = 33372

Step-by-step explanation:

First you have to find out the 3% of 900 (is 27)

then you add 27 to 900

then you multiply it by 3 years (36 months)

and your result is 33372 :)

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How much money is six dimes worth???
andrey2020 [161]

Answer: 60 cents

Step-by-step explanation: 1 Dime= 10 cents; 10x6= 60.

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