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chantelljenkins2
10.06.2020 •
Mathematics
Dan was thinking of a number. Dan adds 10 to it, then doubles it and gets an answer of 56.6. What was the original numbe
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Ответ:
Step-by-step explanation:
Given:
Dan was thinking of a number.
Dan adds 10 to it, then doubles it and gets an answer of 56.6.
Solve for:
Dan's original number
Step 1: Clarify the problem:
Denote Dan's original number as A
Dan adds 10 to A => 10 + A, then
Dan doubles this sum => 2 x (10 + A), then
Dan gets an answer of 56.6 => 2 x (10 + A) = 56.6
Step 2: Solve for the defined equation:
2 x (10 + A) = 56.6
Let's divide both sides of equation by 2:
2 x (10 + A)/2 = 56.6/2
We simplify both sides after division:
10 + A = 28.3
Let's transfer all numbers to the right side, except A (the sign of 10 is changed from + to -)
A = 28.3 - 10
Let's perform the subtraction to get A:
A = 18.3
Hope this helps!
:)
Ответ:
Here, A = 582.25 in²
w = 17 in
Substitute their values,
582.25 = l * 17
l = 582.25 / 17
l = 34.25 in
In short, Your Answer would be 34.25 inches
Hope this helps!