A cylindrical bucket has 150mL of mud in it. A tennis ball was found in the bucket of the mud. When the tennis ball was removed there was 130mL of mud in the bucket. The mass of the ball is 40g. Find the density of the tennis ball. Please Help ASAP

Select the lengths in centimeters that would form a right triangle

Simplify. 4+3/7x-2-2/7x a. 2-5/7x b. 6-1/7x c. 2+1/7x d. 6+5/7x

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?