Triangle has sides of 21 and 17. which is a length of 3rd side

If 20% of a number is 35, what is 50% of that number?

For the chance to be team captain, the numbers 1-30 are put in a hat and you get two chances to pick a number, without replacement. which formula correctly shows how to find the probability that you choose the number 1 and then 2?

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.