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3 years ago

What is the value of x? Enter your answer in the box

Mathematics

1 answer:

sdas [7]3 years ago

7 0

Answer:

x = 20

Step-by-step explanation:

Formula

x1/x2 = x3/x4

Givens

x = 11

x2 = 11 + 121 = 132

x3 = 10

x4 = 10 + 5x + 10

Solution

11/132 = 10 / (5x + 10 + 10) Combine

11/132 = 10/(5x + 20) Cross multiply

11*(5x + 20) = 132 * 10 Combine on the right.

11(5x + 20 ) = 1320 Divide by 11. (You could remove the brackets, but this is easier.

11(5x + 20)/11 = 1320/11 Do the division

5x + 20 = 120 Subtract 20 from both sides

5x + 20-20 = 120 - 20 Combine

5x = 100 Divide by 5

5x/5 = 100/5

x = 20

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mylen [45]

Answer:

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Step-by-step explanation:

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