Sheila is biking at a constant speed. She travels 54 meters in 9 seconds.

Part A
How many meters per second does Sheila travel?
Part B
How long in seconds would it take Sheila to travel 90 meters at this speed?

Given abcd ac=38 and ae=3x+4 find the value of x

Express -5 2/5 as an improper fraction.

Ameteorologist is studying the monthly rainfall in a section of the brazilian rainforest. she recorded the monthly rainfall, in inches, for last year. they were: 10.4, 10.3, 11.7, 11.1, 8.0, 4.4, 2.6, 1.8, 2.5, 4.4, 7.3, 9.5 fill in the missing values in the formula. what is the variance?