Joel walked 2/5 of a mile to the store 3/10 of a mile to the library and 1/20 of a mile to the post office. Let x = the total distance Joel walk. How far did he walk?

Which best explains why this triangle is or is not a right triangle?

Three cylinders have a volume of 2836 cm^3. cylinder a has a height of 900 cm. cylinder b has a height of 225 cm. cylinder c has a height of 100 cm. find the radius of each cylinder. use 3.14 as an approximate for π

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)