Why is the percent increase from 45 to 75 not equal to the percent decrease from 75 to 45

An escalator in the subway station has a vertical rise of 195ft 9.5in, and rises at an angle of 10.4 degrees. How long is the escalator. Round to the nearest foot.

The mean weight of five complete computer stations is 167.2 pounds. The weights of four of the computer stations are 158.4 pounds, 162.8 pounds, 165 pounds, and 178.2 pounds respectively. What is the fifth computer station?

Subtract (3 + 2i) from (-9 - 8i). a. - 17 - 5i b. - 6 - 6i c. - 12 - 10i d. 12 + 10i

28y + 1 = 5 what is y as fraction 4z/9 - 6 = - 3 what is z as fraction

Over many generations, darker fur color becomes more common in a population of squirrels living in a shady area. This is an example of

Add the numbers from 1 to 100 by following the same steps you used in 1.

The numbers of chocolate chips in 7 cookies are shown. 5,7,7,9,12,16,21 What is the mean number of chocolate chips for these 7 cookies?

The length of rectangular hall is 3 meters more than double of its breadth. If it's perimeter is 66 meters, what is its length?

You wake up at 6:50 a. m. and spend 30 minutes getting dressed. you have a 20 minute walk to school. what time do you arrive at school?

How many solutions are there to - 46=3x+7x