A group of 42 children all play tennis or football, or both sports. The same number play tennis as play just football. Twice as many play both tennis and football as play just tennis. How many of the children play football?

How can you use negative numbers to repel resent real-world problems?

1.5 4.5 13.5 40.5 ... what is the seventh term in the sequence?

I'm having a hard time answering this question. What is (12x12) + 48?

A car uses an average of 8 litres of fuel for every 100 km travelled. At this rate, how many litres would the car use to travel 250 km?

Group of people are taking the train home 19 people get off the train, 17 people then get on. now there are 63 people on the train. how many were there to begin with?

What is the cube root of - 1,00001278?

Steve, Mark, Melissa, Joe, and Mary are in a group. They randomly line up at the door. What is the probability that the first person in the line is a girl?

Divide X^4 + 2x^2+1 by x+1

Use an example to describe how a rate is a measure of one quantity per unit of another quantity

IVa wantd to train for a race by runing 10km ober 3 days uring the week. The first day she ran 1.37 km more than she aran on the secnod day. On the third day, she ran 0.98 km more than the second day. How many km she run on the third day?