Solve system by substitutition or elimination.

9x-8x=9

-18x+16y=-18

Find the circumference and area of the circle with diameter 12 ft. Express your answer in terms of π. 8π ft; 36π ft2 12π ft; 36π ft2 6π ft; 38π ft2 12π ft; 64π ft2

Convert 12 cups to quarts

Evaluate 8 j - k + 14 when j = 0.25 and k = 1

What is 10 times 10000000

It is estimated that an iceberg weighs 84000 tonnes. As the iceberg moves into the warmer water, it's weight decreased by 25% each day. What will the iceberg weigh after 3 days in the warmer water? Give your answer to 3 significant figures.

1. A rectangle is 6 inches longer than its wide. Write and simply an expression for the perimeter of the rectangle. 2. simply : 5+2 (3x + 4) + x 3. shelly lives 500 miles away.

A plane's altitude had a change of - 2750 ft. in 5 minutes. What was the plane's average change in altitude, per minute, for that time period? A. - 13,500 ft B. - 550 ft C. 550 ft D. 13,750 ft

Write the fraction as money amount 65/100

Does anybody know what 11/10 to the 2nd power is? (11/10 is an improper fraction if you are wondering)

Identify the center and radius of a circle with aquation (x+9) ^2 + (y+6) ^2=9