Solve by substitution

3x - 3y = - 6

z=-3x-3y+9

-4x+5y+z=8

Find the area of a circle with a radius of 5 units. a. 18.85 square units c. 615.75 square units b. 78.5 square units d. 62.8 square units

Carly buy a new house for 125,000 the value of the house appreciate approximately 3.5% each year what will be the value of a house after 10 years

Y=9x-2 3x-2y=7 what is the value of x of the given system of equation A) - 3.8 B) 3.8 C) - 0.2 D) 0.2

The measure of an angle is 46°. What is the measure of its supplementary angle?

What is the greatest common factor of 15abc^2 and 25a^3bc?

7a-17=4a+1 what's the solution to this problem

A pillow that usually costs $18 is marked down 25%. Which expressions can be used to find the new price of the pillow?

Chip has 25 marbles and 16 of them are blue what percent of his marbles are blue

What is a numerical expression for the word phrase? The quotient of 21 and 55

In 1927, Charles Lendbergh had his first solo flight across the Atlantic Ocean. He flew 3,610 miles in 33.5 hours. If he flew about the same number of miles each hour, how many miles did he fly each hour?