michaellagann2020
04.09.2020 •
Mathematics
Which of the following sets of numbers would best be used to describe the area of a kitchen floor? A. Whole numbers B.integers. C.rational numbers. D.real numbers
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Ответ:
The perimeter of a triangle is:
P = a + b + c
We are given that:
b = a + 3
c = 2 a – 3
Therefore:
68 = a + a + 3 + 2 a – 3
68 = 4 a
a = 17
and,
b = a + 3 = 20
c = 2a – 3 = 31