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enter the correct answer.
a. right means we have a 90 degree angle
b. scalene means all the sides have different lengths
c. equilateral all the sides and all the angles are equal
d. isosceles 2 of the sides and 2 of the angles are equal
answer is a : )
$67 profitstep-by-step explanation:
the average of three numbers is their sum, divided by 3. let x represent the profit during the third month. then the average monthly profit is
(-29 + 115 + x)/3 = 51
86 +x = 153 . . . multiply by 3, collect terms
x = 67 . . . . . subtract 86
their profit the third month was $67.
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