Which of the following regular polygons will not tessellate by itself?

triangle

square

hexagon

decagon

What is the length of the diagonal of a 10 cm by 15 cm rectangle

The perimeter of a rectangular city is 94 miles if the length is five feet more than twice the width find the length and width of the city

A triangle with the side lengths 12, 14, 18 is

Ken, Barbie and Teresa were in a swimming race. ken finished in 2minutes and one sixth. Barbie finished in 18over8, Teresa finished in 22over10 minutes. Who got 1st, 2nd, 3rd

Angel entered a triathlon. He ran 10 miles, rode his bike 30 miles, and swam 1 mile. how far did he go altogether?

What is 1 fourth+1 fourth + 1 fourth + 1 fourth

If 3x4 is 12 then what is 3x12 a. 24 b. 36 c. 19 d. 48

Mr. Horn had a sheet of plywood that measured 84 inches long and 65 inches wide. He sawed th sheet of plywood in half. What was the area of each sheet of plywood in square inches?

The graph of the function y = tan (x) was horizontally stretched so that it's period became 10 π. Which is the equation of the transformed function? A. y=tan (x/10) B. y = tan (x/5) C. y = tan (5x) D. y = tan (10x)

Natalie found a tennis ball outside a tennis court. she picked up the ball and threw it over the 12 foot fence into the court. the height of the ball, h, and time t seconds is given by the equation h (t) = - 16^2+18t+5.