A modern piano has 52 white keys and 36 black keys.

If a note is played at random, what is the probability of pressing a white key?

What number can go into 25 and 48

X - 12y = - 210 and x - 6y = 90, then x =

Write the fact family for 4, 7 and 28

Find the first four terms in the sequence an = 15 + 6n

Tristan records the number of customers who visit the store each hour on a Saturday. His data representing the first seven hours are 15, 23, 12, 28, 20, 18, and 23.

Is 27 divisble by 2 3 4 5 6 9 or 10

What is the variance with the data 8 2 4 3 5

Mr. jacobs wanted to purchase a pair of pants. he only had 25.00. When he arrived at the store he saw a sale sign that read 1/4 off at of 40.00. Does Mr. jacobs have enough money to purchase the pants? show your work.

How many cubic blocks of side length 1/7 inch would it take to fill a cube with a side length of 3/7 inch?

Write a world problem that can be solved by drawing an array. then draw the array and solve the problem