Here are two equations.

k = a+b

a+b+k=30

What is the value of k?

Eddie believes that if he flips a coin 650 times it will land heads up exactly 325 times what would you tell Eddie about his prediction?

Gael and Torin don't want to take the garbage out, but their mom said one of them had to. Gael suggests they flip 2 coins to determine who has to do it. If they match Torin takes out the garbage, if they don't match Gael takes out the Garbage.

Does the dividend come first or second

A recipe for cake calls for 3/4 cup sugar and 1/3 butter. Which of the following is equivalent to the ratio of sugar to butter and how? A) 4/9 : 1 B) 9/4 : 1 C) 3/12 : 1 D) 12/3 : 1

A:b=2:3 b:c=4:7 a:c = x what is x?

What is negative 2/9 minus negative 3

Convert 39/5 to a mixed number written in lowest terms

the home teams score exceeded 2 times the visiting teams score by 5 if the visiting teams score is x which expression represents the home teams score

How to solve this equation x-9=-6x+5

Y=5x+21 and y=-7x-15