Average of 93
4 scores
(95+92+89+x)/4<u>></u>93
times 4 both sides
276+x<u>></u>372
minus 276 both sides
x<u>></u>96
A
Answer:
21
Step-by-step explanation:
50 - 23.75 = 26.25
26.25 ÷ 1.25 = 21
Answer: THE SECONDED ONE
Step-by-step explanation: NONE
slope = rise over run = y/x
A (-1,3) slope = 3/-1 = -3
B (1,2) slope = 2/1 = 2
C (-3,-1) slope = -1/-3 = 1/3
2 lines need to be negative reciprocals in order to be a right triangle
negative reciprocal of -3 is 1/3
so this is a right triangle
