reggie1127
08.01.2021 •
Mathematics
The triangular sail has an area of 25 square feet. The sail's height is 10 feet. What is the length of the base of the sail? Hint: Remember that the area of 25 square feet is half of the rectangle. Don't forget units (feet) in your answer. I'LL MAKE FIRST GOOD ANSWER BRAINLIEST PLEASE HELP
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Ответ:
(a - 5) (a + 5) = (a*a + a*5) + (-5*a + -5*5)
= a^2 + 5a - 5a - 25
= a^2 - 25