How do you solve systems of equations

How many bikes and tricycles does Rick's bike shop have if the inventory shows 117 wheels and 104 pedals?

What is 35/9 as a mixed number?

What is an Algebraic expression for, 6-foot pine tree is planted and grew 2 feet each year?

Odss for not drawinf 2-7 cards from a 52 deck of cards?

Kendrick received 24 fewer e-mails than he did on Thursday. If he received a total of 126 e-mails on those two days, how many did he get on each day?

What is the quotient when root 1500 is divided by 2 root 15

1 eighth the sum of 23 and 17

What is the median of the following data set? {6, 3, 9, 1, 7}

The function f (x) = 18000 (0.52) x represents the value in dollars of a vehicle x years after it has been purchased new. What is the average rate of change in value per year between years 4 and 8? -$18000/year -$1219.87/year -$304.97/year -$0.

4x-6y=2 3x+5y=11 Jonas used the linear combination method to solve the equation shown. He multiplied the first equation by 3, and the second equation by another number to eliminate the x terms. What number did Jonas multiply the second equation by?