Solve the system of linear equations by substitution. 9. 2x+3y=25 and 4x-y=15

2.75c+4.00s< 300 solve for c

at an amusement park, Sandy wants to ride a rollercoaster that costs 23 tickets, a bumper car that costs 28 tickets, and a merry-go-round that costs 32 tickets. Sandy had 21 tickets, but lost 5 of them on a ride. How many more tickets does she need?

Find the sum of the first 4 multiples of 10

Samuel has read 3/6of his assignment Judy has read 4/8 of her assignment there assignments for the same size who read more? Or did they both finish at the same time

What is the following quotient? StartFraction StartRoot 120 EndRoot Over StartRoot 30 EndRoot EndFraction 2 4 2 StartRoot 10 EndRoot 3 StartRoot 10 EndRoot

What are the zeros of the function below? Check all that apply. F (x) = (x - 2) (x + 1) / x (x - 3) (x + 5)

What is 27 - 9.9 using mental math?

Sally is making sun tea. Every hour the concentration of the tea doubles. If it takes 6 hours for the tea to be ready how long would it take the tea to reach half of the final concentration?

How do you add 1/3 plus 4/10

A 9-cm chord is 11 cm from the center of a circle. What is the radius of the circle? C. 13.0 cm B. 11.9 cm A. 9.0 cm D. 14.2 cm