msbanks317
18.12.2019 •
Mathematics
Suppose you want to build a rectangular sandbox where the width is 7 less than the length and the diagonal is 2 feet longer than the length. what are the dimensions of the sandbox?
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Ответ:
The dimensions of the sandbox will be 15 feet by 8 feet.
Step-by-step explanation:
Suppose we want to build a rectangular sandbox where the width is 7 less than the length and the diagonal is 2 feet longer than the length.
If x is the length and y is the width in feet, then we have the equations
x - y = 7 ......... (1) and
........ (2)
Now, solving equations (1) and (2) we get
⇒
Now, squaring both sides we get,
x² + x² - 14x + 49 = x² + 4x + 4
⇒ x² - 18x + 45 = 0
⇒ (x - 15)(x - 3) = 0
⇒ x = 15 or 3
But from equation (1) x ≠ 3, then x = 15 and y = x - 7 = 8
Therefore, the dimensions of the sandbox will be 15 feet by 8 feet. (Answer)
Ответ:
I got the answer by dividing 15 and 3 to get $5 per t-shirt
with this information, we can now multiply 5 x 5 to get the answer 25
This equation means, Cost of Shirt X Number of shirts = Total Cost