Answer:
7
Step-by-step explanation:
Let's say our sum is s.
s = 10 right angles
a right angle is 90 degrees
s = 10 (90)
s= 900
Given the amount of sides in a polygon (n), the sum of the interior angles is equal to
(n-2) * 180
Therefore, the sum of the interior angles is equal to
(n-2) * 180 = 900
divide both sides by 180 to help isolate n
n-2 = 5
add 2 to both sides to isolate n
n = 7
Answer:multiplication property of -1
Step-by-step explanation:
because it is muliplying by negatives
Answer:
a=-4 b=-2 c=-1 d=1 e=2
Step-by-step explanation:
Lin: 7x+14=91, 91-14=7x, 77=7x, divide each side by 7, x=11
noah: x+2=91/7, x+2=13, subtract 2 from both sides, x=11
5 * 198 = 5(100 + 98) = (5 * 100) + (5 * 98) = 500 + 490 = 990
