The sum of the interior angles of a triangle = 180 degrees. So, all of the angles on the inside of the triangle will add up to 180.
60 + 40 + ? = 180
100 + ? = 180
? = 80
The missing angle in the triangle is 80 degrees.
Hope this helps!
Answer:
20
Step-by-step explanation
use the formula a²+b²=c²
since a=21 and c=29 you need to solve for b
Put 21 in for a and 29 in for c
21²+b²=29²
21²=441
29²=841
so then the equation would be 441+b²=841
subtract both sides by 441
then you have b²=400
now just find the square root of 400
√b²=√400
b=20
Answer:
(x + 15) / 2
Step-by-step explanation:
Distance = rate × time
d = (x² – 225) / (2x − 30)
d = (x – 15) (x + 15) / (2 (x – 15))
d = (x + 15) / 2
Answer:
x = 9, y = 41
Step-by-step explanation: