A parachutist descends 64 feet in 4 seconds. Express the rate of the parachutist's change in height as a unit rate.

The unit rate of the parachutist's change in height is __ feet per second.

At a zoo, the lion pen has a ring-shaped sidewalk around it. The outer edge of the sidewalk is a circle (blue) with a radius of 11 m. The inner edge of the sidewalk is a circle (orange) with a radius of 9 m.

The class collected a total of 1943 pennies in 4 weeks. Sam brings in 125 pennies each week. Approximately what percent of the total pennies collected did Sam bring?

Drag the divisor fraction to the dividend bar to see how many Use fraction bars and the rules of dividing signed parts of the divisor are in the dividend. numbers to divide who Dividend The quotient is - Divisor

Simplify the expression. - | - 13 | =

Ms. Frazier chooses two students to come to the board from a class of 12 boys and 8 girls. What is the probability that she will select a girl student first and a boy student second?

5y - 3z + 4y - 1z - 3y; y = 3 and z = - 2

An architect represents a 9 inch height as inch on a scale drawing. Which of the following scales did the architect use? 1 foot = inch 1 foot = inch 1 foot = inch 1 foot = inch

86% of senators support a bill. What fraction of senators support the bill?

Lettuce is packaged in four bags to a box. if there are 3.5 boxes of lettuce in a cooler, how many bags of lettuce would there be?

Christy drove 300 miles on her vacation. she drove an average of 1.25 times faster on the secont 150 miles of the trip than she did on the first 150 miles. what expression represents the time she spent driving? let x=her speed on the first half