Answer:
55
Step-by-step explanation:
a triangle adds up to 180°
25+30+x= 180
55+x=180
x=180-55
x=125
x and y is a straight line so it adds up to 180°
x=125 y=?
x+y=180
125+y=180
y=180-125
y=55°
y= 55°
Answer:
15 feet
Step-by-step explanation:
The ladder is the hypotenuse of a right triangle, with the legs being 9 ft and 12 ft long (see the picture).
To solve for the length of the ladder, use the Pythagorean Theorem.

Answer:
11m
Step-by-step explanation:
2(5m)+m=10m+m=11m
Triangle, sum of all 3 angles = 180
so 180 - (99 + 11) = 180 - 110 = 70
answer: the third angle = 70
High school A had 15 people in each van and bus.