a class voted for either rollerblading, swimming, or biking as their favorite summer activity. if rollerblading got 21% percent ad swimming got 40%, what percentage of the class voted for biking?

A 13-foot ladder leans against a house. the bottom of the ladder is 5 feet from the house. to the nearest degree, what angle does the ladder make with the ground? enter your answer in the box.

Peter inherits 15000 dollar and place money with a bank. the interest rate are 3 percent. how many money will he get after 1 year?

A rectangle with vertices A (-3, 1), B (1, 3), C (2, 1), and D (-2, - 1) is rotated 90° clockwise about the origin and then dilated by a factor of 3 with the origin as the center of dilation to obtain rectangle A′B′C′D′.

In the derivation of the formula for the volume of a cone, the volume of the cone is calculated to be times the volume of the pyramid that it fits inside.

What is the common difference in the sequence 2a+1, 4a+4,6a+7,8a+10, ... ?

Ross is shopping for mulch that costs $1.29 per cubic foot. During his first trip to the store, he bought 16.5 cubic feet. He needs another 4.5 cubic feet to complete his landscaping project.

What is the solution to 6x+y=24

Joe, Jim and Jack share 27 football cards equally. How many cards does each boy get?

What is the quotient? Negative StartFraction 3 over 8 EndFraction divided by negative one-fourth Negative 1 and one-half Negative StartFraction 3 over 32 EndFraction StartFraction 3 over 32 EndFraction 1 and one-half

A circular pond will be placed on a square piece of land. The length of a side of the square is 2x. The radius of the pond is x. The part of the square not covered by the pond will be planted with flowers.