Answer:
x - 3y + 8
Step-by-step explanation:
The perimeter of a triangle is sum of all the three sides.
One side is 5x + y
Another side is 7 + x
Let third side be m
And perimeter is 7x - 2y + 15
We simply sum the 3 sides and equate it to expression of perimeter and find m(third side). Shown below:
5x + y + 7 + x + m = 7x - 2y + 15
6x + y + 7 + m = 7x - 2y + 15
m = 7x - 2y + 15 - 6x - y - 7
m = x - 3y + 8
This is the length of the third side "x - 3y + 8"
3/7 just add the top numbers since the bottom two are the same number
Answer:
Before A. 32.7247330577, A. 27.8204757722, B. 32.7247330577, C. 15.4868329805, and D. 32.7247330577
Step-by-step explanation:
Used a calculator. Not that Hard.
Answer:
15
Step-by-step explanation:
Understanding Quadrilaterals | Exercise 3.2. Q3) How many sides does a regular polygon have if the measure of an exterior angle is 24°? => Number of sides of polygon with each angle of 24 is 15.
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