Is 78990 divisible by 9

How to rewrite fractions when adding them like 1/4+4/8

At the movies a bag of popcorn cost $3.50 and a bottle of water coast $2.75. If Madeline has $18 and bought two bottles of water how many bags of popcorn can she buy at most

Sara is multiplying two factors, one with one decimal place and one with two decimal places. She says that the product could have two decimal places. is she correct?

Dylan counts vehicles as they passed by his school. So far, he has counted three minivans, five trucks, two motorcycles and 10 cars. What is the estimated probability that the next vehicle that passes his school will be a motorcycle?

Erica bought 3 1/2 yards of fabric. If she uses 2/3 of fabric to make a curtain, how much will she have left?

The equation t=0.07c represents the tax, t, based on the cost, c, of an item. Which part all of the equation represents the constant of proportionality? (A) T (B) 0.07 (C) C (D) 7

What is the angle measure that is vertical to an 83° angle?

Can area and perimeter be measured in units squared

The windows of a downtown office building are arranged so that each floor has six fewer windows than the floor below it. If the ground floor has 52 windows, how many total windows are on the first eight floors?

4) 4n2 + 7n - 135 = 0