Answer:
180
Step-by-step explanation:
If the awnsers are equal and make a full 360 angle, the angle of one of them is 180 because that is half of 360.
Answer:
= 
Step-by-step explanation:
Given

Required
Simplify

Rewrite as


Open the bracket

Answer: b
explanation: only choice B equals -9 like the given equation.
Answer:
m<1 = 51
m<2 = 61
m<3 = 29
Step-by-step explanation:
three angles of a triangle = 180
so knowing that add 68 + 61 to get 129
now subtract cause the last angle will = 180-129 = 51
for angle two is 61 cause their congruent
now we have one angle = 90 and another 61
add them 90+61= 151
now subtract 180-151 = 29
$55 this is shown by doing 80/100=0.80. and 0.80*55=this is the answer