Solve the system of equations by substitution: x=2

X+y=10

A. X=2 and y=10

B. x=2 y=4

C. X=2 and y=8

D. X=10 and y=2

Solve the equation: |3x+15|=6

Lisa is 4 years older than three times her brother Sammy's age. Let 's' represent Sammy's age and 'l' represent Lisa's age. Which expression represents Lisa's age? • l = s + 4 • l = 3s • l = 3s + 4 • l = 4s + 3

A model builder has 30 pieces of balsa wood in a box. Four pieces are 15 inches long, 10 pieces are 12 inches long, and the rest are 8 inches long. What is the probability the builder will pull an 8-inch piece from the box without looking?

Solve 6 (x-7) = 10 (x+4) for x

Jethro is planting flowers in his garden. He wants the ratio of tulips to roses to be 3 to 2. Jethro wants to plant a total of 50 flowers. How many tulips should he plant?

Seven people meet and shake hands with one another how many handshakes occur

Which of the following is true? a. Stratification is utilized to create a z-score across data sets. b. Summarization provides detail for each grouping into tables. c. Stratification is an extension of summarization. d.

Solve the equation: 3 (x-5) - 5x = - 25 + 6x

A jewelry box with a square base is to be built with silver plated sides, nickel plated bottom and top, and a volume of 30 cm3.

How many faces, vertices, and edges does a cube have?