Vertical angles are equal

5x - 40 = 3x + 8
5x - 3x = 8 + 40
2x = 48
x = 48/2
x = 24

m∠ABC = 3x + 8 = 3 * 24 + 8 = 80°

(or m∠ABC = 5x - 40 = 5 * 24 - 40 = 80°)

8 0

3 years ago

How many different ways can 3 singers be selected from 5 who came to an audition

abruzzese [7]

This is known as "5 take 3", where ordering is not important.

$\binom{5}{3} = \frac{5!}{3!(5-3)!} = \frac{120}{6\cdot2} = 10$

5 0

3 years ago

What is the sum or product of 93+(68+7)

ser-zykov [4K]

93+(68+7)

first do what's in the parentheses
(68+7)
68+7= 75

new problem: 93+75
93+75= 168

Answer is 168

6 0

3 years ago

Read 2 more answers

What's 1 + 1 (One plus one)?​

What's 1 + 1 (One plus one)?