A number is :
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Three quarters of it means :
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Decrease by 20 means :
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Equals to 82 means :
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What is that number ?
x asked so we must solve the above equation for x.
Let's do it....
Plus sides 20
Multiply sides by 4
Divided sides by 3
Simplify
So that number is 136 .
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And we're done.
Thanks for watching buddy good luck.
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Answer:
$60
Step-by-step explanation:
12/8 = x/40
40(12/8) = x
60 = x
This question is referred to two similar triangles.
One triangle has sides x and x - 2.
The other triangle has the respective sides x + x + 5 and x - 2 + x + 1
Then you can state a proportionality relation between the sides>
[x + x + 5] / x = [x - 2 + x + 1] / [x - 2]
=> [2x + 5] / x = [2x - 1] / [x - 2]
=> (2x + 5)(x - 2) = (2x - 1)x
=> 2x^2 - 4x + 5x - 10 = 2x^2 - x
=> x - 10 = - x
=> 2x = 10
=> x = 10 / 2
=> x = 5
Answer: x = 5