2x+13=21 is it linear

A square swimming pool has a cement sidewalk around it. The sidewalk is the same width all the way around. The outside perimeter of the sidewalk is 80 feet. What is the width of the sidewalk if the area of the pool is 225 square feet?

How far does a bus travel in 4 hours at 55 mph? 13.75 miles 220 miles 234 miles

After 5 minutes of a basketball game

Which two equations below could you solve to find D, the number of days it takes the water lily population to double? 2 = 3.915 (1.106) D 7.830 = 3.915 (1.106) D 7.830 = 3.915 (2) D 2 = 1.106D

A sector is a wedge-shaped section of a circle graph. true false

Write a numerical expression with exponents to describe the sum of 3x3x3x3 and 36

The given figure is a square pyramid. The side length of the base of the pyramid is 6.6 feet. The height of the pyramid is 12.672 feet. What is the volume of the pyramid?

What is 4x+2=10 For linear equations?

Eva wants to get to the bus stop as quickly as possible. The bus stop is across a grassy park, 2000 feet west and 600 feet north of her starting position. Eva can walk west along the edge of the park on the sidewalk at a speed of 6 ft/sec.

What is 20 percent of 90?