Step-by-step explanation:
all angles of a triangle sum to 180
180 = 15x + 24x +21x
180=60x
solve for x
then substitute that for 24(x) to get the angle
Hopefully this will help you
n² - 4n = 0
n(n) - n(4) = 0
n(n - 4) = 0
n = 0 or n - 4 = 0
+ 4 + 4
n = 4
Solution Set: {0, 4}
Answer:
55
Step-by-step explanation:
CE is a bisector so DE has the same measure as BE.
Altitude is another word for height so it would be the first answer