Which pair of equations represents perpendicular lines?

a x+2y=8 : 2x-y=-8

b x+2y=8 : 2x+y=8

c x+2y=8 : - x-2y=8

d x+2y=8 : -x-2y=-8

The Mississippi River is about 23/25 the length of the Missouri River. if the Missouri River is 2,540 miles long, how long is the Mississippi River?

3. Use the Fermi process to estimate the number of bricks needed to fill an empty bathtub. Show your work. A typical brick is a rectangular prism with dimensions A typical bathtub is a rectangular prism with dimensions 2.

On a multiple choice test, each question has 4 possible answers. if you make a random guess on the first question, what is the probability that you are correct?

Which is not equal to the absolute value of - 1?

Beach hotel in cancun in offering

A construction crew has just finished a road. The crew worked for 2 4/5 days. If they built 3 2/7 kilometers of road each day, what is the total length of road they built?

Four friends split equally a lunch bill of $36.96 plus 20% tip. how much did each person pay?

What is 433.38 in word form

Rosita and Garth are saving up for a vacation, and begin with a certain amount saved each. If Rosita works 5 hours, she will have $128. If she works 7 hours, she will have $164. If Garth works 3 hours, he will have $124.

Which situation could not represent a proportional relationship