AB is parallel to CD and EF is perpendicular to AB. The number of 90 degree angles formed by intersections EF and the two parallel lines AB and CD is

A light bulb consumes 2400 watt-hours per day. How long does it take to consume 13800 watt-hours?

Type the correct answer in the box. If cos x = sin (20 + x) º and 0°

Your baseball team has won 6 games and lost 4 games. If the team does not lose any more games, how many games must the team win to have a win : lose ratio of 2:1? Explain your answer

The lunch lady has 3 pounds of lasagna left over. If she makes 16-pound servings, how many servings of lasagna can she serve with the amount left over?

What is the probability out of a 52 deck of cards that a jack or a heart are pulled

One number is seven less than five times another. If their sum is decreased by four the result is one. Find the numbers

How many feet lower is-282 than - 68

Which number is divisible by 60 2,3,4,5,6,9 and 10,

Describe the relationship between the values of the digits of 9,999,999

Desmond is 2 inches taller than Niki. If we let ___ represent Niki's height in inches, write an algebraic expression for Desmond's height.