If two lines are perpendicular, then they form four angles that are each 90 degrees.

true or false?

Combining like terms 2a+1+9a+7

The school band is selling candy to raise $1,800.00 to pay for their trip to a band festival. The band earns $1.50 from every box of candy sold. Kayla solved the inequality 150>1,800 to find the number of boxes the band must sell to meet their goal.

What is 213,548 rounded to the nearest hundred thousand?

emily earns $75 per day plus a commission. her commission is 15%. she sells $600 worth of furniture. how much does she earn for the day

How to turn 5 1/2% into a decimal

6t - 6, for t = 6 A 42 B 29 C 30 D 43

Find the ratio a:b, if it is given that ... 1) 2a=9b 2) a/5 = b/7 3) 6a-3b=5b 4) a+b=3b 5) a-2b/a+2b = 1/2 6) 2a-3b/5 = a+b/3

A box contains one yellow, two red, and three green balls. Two balls are randomly chosen without replacement.

Three brothers share 2 sandwiches equally. Hoe much of a sandwich does each brother get?

The mathematics department of a college has 6 male professors, 12 female professors, 10 male teaching assistants, and 9 female teaching assistants.