75. As she is going up, 15 stairs have been passed by the escalator moving. When she goes down same thing
Answer:
158.49
Step-by-step explanation:
10^(3.4 - 1.2) = 158.48931924611
round to 158.49
Answer:

Step-by-step explanation:
I have attached the explanation above. hopefully this will help
Answer:
x = 18.5
Step-by-step explanation:
Given
+
= 10
Multiply through by 4 to clear the fractions
2x + 3 = 40 ( subtract 3 from both sides )
2x = 37 ( divide both sides by 2 )
x =
= 18.5