75. As she is going up, 15 stairs have been passed by the escalator moving. When she goes down same thing
Answer:
ummmmmmmmmmmmmmmmm
Step-by-step explanation:
hmmmmmmmmmmmm
Answer:(-1,3)
Step-by-step explanation:
Answer:90
Step-by-step explanation:
Answer:
Step-by-step explanation:
2(4 + x) = 34
4 + x = 34/2 = 17
x = 17 - 4 = 13