A girl is 21 years old and her brother is a third her age. When the girl is 36, what will be the age of her brother?

A regular polygon has an interior angle of 105 how many sides does it have?

Douglas is placing strings of lights around the edge of a circular patio with a diameter of 7.5 m. The lights are in lengths of 1.45 m. What is the best approximation for how many strings of lights Douglas needs? Use 3.14 to approximate for π.

Jane has a ten dollar bill, a quarter, a dime, three nickels and two pennies in her purse. How much money does Jane have?

If meg cycles 6.2 km every morning how many feet are in 6.2 given that 1 mile = 1.609 and 1 mile = 5,280

You draw one card from a shuffled standard deck of cards (cards are in four suits - red diamonds, red hearts, black clubs, and black spades - and are numbered 2, 3, 4, 5, 6, 7, 8, 9, 10, j, q, k, a). a.

Nine times a number increased by 21 is no more than twice the number

Manny and Susan have an egg carton full of eggs to use for their science project. Manny uses 1/3 of the eggs and Susan uses 1/2 of the eggs. Which fraction of the eggs did Manny and Susan use for their project?

Calculate the area and volume of the ball of radius: a) r = 4 cm; b) √3 cm

What is the sum of the interior angles in the polygon below? [asy] size (2.5cm); draw ((0,0) - - (3,-4) - - (5,2) - - (7,-1) - - (8,5) - - (4,9) - -cycle, linewidth (1.25)); [/asy]

Lynn, Faith, and Jermyn are film animators. In one 8-hour day, Lynn rendered 203 frames, Faith rendered 216 frames, and Jeremy rendered 227 frames. How many more frames per hour did Faith render than Lynn did?