What is the mathematical explanation of perpendicular?

Ivan has a piece of lumber 104 inches long. He is sawing it into 12-inch lengths to make fence posts. He says he can get about 9 fence posts out of the board. Is this reasonable?

What are the terms in the expression 3z+5x+7? 3z, and 5x 3z, 5x, and 7 7 3, and 5

Write a number that means the same as (5*10,000) + (4*100) + (3*1)

For every 24 minutes of television there are 6 minutes of commercials. How many are there in 1 hour and 36 minutes of television

What is the value of the expression (12-x) + y/2 when X = 4 and y=-8? OA) 4 OB) OC) OD 10

An office supply company is shipping a case of wooden pencils to a store. There are 64 boxes of pencils in the case. If each box of pencils weighs 2.5 ounces, what is the weight, in pounds, of the case of wooden pencils?

10 strawberries and 4 oranges to make 8 servings what is the ratio for 12 servings?

1) What is 36/80 in lowest terms? 2) What is - 16/28 in lowest terms? 3) which fraction is equivalent to 5/12 - A) 2/3 B) 10/18 C) 20/54 D) 15/36 4) which fraction is not equivalent to 15/20 - A) 3/4 B) 9/12 C) 12/16 D) 25/30 5) simplify 24/40x - A)

25m^6-40m^3+16 factor this

How does division effect numbers (example)