How to add a mixed fraction?

How do you write 90% as a mixed number

The volume of a right cylindrical water tank is 1000π cubic meters. The radius of the base of the tank is 10 meters. Find the length, in meters, of h, the height of the tank.

In geometry a train metal tracks and Wooden ties would be Parrell, Skew, perpendicular or none?

What is 34 + - 3+34 divided by 12=

Is the equation true, false or open? Why? 3y + 6 = 5y - 8

Consider the conditional statement. What is the inverse of the contrapositive of this statement?

Serena changes the number 3 to a 6 on the spinner. What are the changes of landing on an odd number?

2/3 of 27 is equal to what fraction?

The average mark of candidate in an aptitude test was 128.5 with a standard deviation of 8.2. Three scores extracted from the test are 148, 102,152. What is the average of the extracted scores t hat are extreme values (outliers) ?

Solve the system using elimination. x - y = 4 - x - y = 6