How to solve 2x+3y=20 and - 2x-3y=-20 by using elimination?

According to edward t. hall, the range of which type of distance is approximately 1½ to 4 feet?

Find r if 3 (r - 7) = 4 (2 - 2r) + 4

10.) If a new shirt costs $34.99 and the sales tax is $2.10, the sales tax rate is A. 2 percent B. 4 percent C. 6 percent D. 8 percent

Trees are planted along a road that is 2 kilometers 50 meters long. Eleven trees are planted at an equal distance apart along the road. What is the distance in meters between each tree?

A table has an area of 12 and a perimeter of 16 ft. What are the dimensions of the table? 2 ft by 6 ft 2 ft by 8 ft 4 ft by 3 ft 4 ft by 4 ft

Angle ABD measures (4x + 10) o. Angle ACD measures (5x - 2) o. Circle E is shown. Angles A B D and A C D intercepts arc A D. Angles B A C and B D C intercepts arc B C. What is the measure of arc AD? 12° 58° 96° 116°

Solve this system of equation using substitution y=2x-4 x+2y=10

What is the solution to the open sentence? 8y + 7 = y + 21 A. 2 B. 4 C. 7 D. 14

Use two mixed numbers to write an equation with a sum of 4 and 1 forths

Ms. Brody is choosing a flowerpot. There are 5 ceramic pots, 7 wooden pots, and 10 plastic pots. How many choices for a flowerpot does she have? 75 45 350 22