A school assembly had 30 students in attendance, and 20% of them were first-graders. How

many first-graders were at the assembly?

Complete the sentences. Factor pairs for 18 are

What is the role of the order of operations when evaluating expressions

1/9 is half of? (fraction)

A big group of people are taking the train home for Christmas. 19 people get off the train in Brooklyn, 17 people then get on. Now there are 63 people on the train. How many were there to begin with?

What must be true of two lines that have the same slopes and y-intercepts

In a bowl, there are 3 peaches, 2 apples, 6 lemons, and 4 plums. If 1 piece of fruit is to be selected at random, what is the probability it will be a lemon?

How many 1 3/4 foot pieces of ribbon can be cut form piece of ribbon that is 36 feet long

There are 5 radar stations and the probability of a single radar station detecting an enemy plane is 0.55. What is the probability that the number of stations that detect a plane is no more than 3? Round your answer to nearest hundredth

Which of these is a solution to the equation 2 (x - 5) = 9 - 3 x + 6 + 8 + 3 x + 7? x = 80 x = 20 x = 40 x = 10

What are 3 expressionsthat ate equivalent to 12x + 8y