Kyra walks and jogs each morning. She averages 4 km/h walking and 8 km/h jogging. The round trip distance that she[..]

determine wheter the following paris of lines 5x-6y=19 6x+5y=-30

The sum of three numbers is negative 48.The first number is twelve more than the second number and the third number[..]

Write each decimal as a fraction or a mixed number in simplest form. 1.75

A women invests $37,000 part at 8% and the rest at 9.5% annual interest. If the 9.5% investment provides $452.50[..]

Jean has $2.20 in change.she has three times as many dimes as quarters.how many of each does she have

An executive invests $22,000, some at 7% and some at 6% annual interest. If he receives an annual return of $1,420,[..]

how many square feet are there in a square that is 2 yards wide by 2 yards long 7-1

Two times a number plus three times another number equals four. Three times the first number plus four times the[..]

A rock is thrown straight up from a 384 foot cliff. The height of the rock as a function of time is given by the[..]