Answer:
Step-by-step explanation:
The given expression is :
To create a perfect square binomial, we add the square of half the coefficient of x
We simplify to obtain;
Answer:
The top is 5
The right side is 5
The bottom is 2x = 2*5 = 10
The left is 5-2 = 3
Step-by-step explanation:
The perimeter is the sum of the sides
x+x+ 2x + x-2 = 23
Combine like terms
5x-2 = 23
Add 2 to each side
5x-2+2 = 23+2
5x = 25
Divide each side
5x/5 = 25/5
x = 5
The top is 5
The right side is 5
The bottom is 2x = 2*5 = 10
The left is 5-2 = 3
A:
70 + 69 + n = 180
n = 41
X = 180 - 41 = 139 deg.
b:
Y = 50 (according to some theorem I forgot)
X = 180 - (50 + 60) = 70
d: :
180 - 160 = 180 - (20 + 70) = 180 - 90
X = 90
e:
180 - 130 = 180 - (50 + 45) = 180 - 85
X = 95
The answer is going to be letter choice C