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

Scientists are studying hurricanes to determine the number of hurricanes in the past 50 years that have caused greater than $1 million in damages. Which best describes the population?

Ted started a puzzle at 7:17 PM. I have completed the puzzle at 7:43 PM. How long did it take Ted to complete the puzzle?

Brittany works 21.5 hours a week. If she earns $8.50 per hour, how much does she earn in one week?

Solve 2x^2-4x-18=0 by completing the square. round the solutions to the nearest hundredth

A deli charges the same price, $5.20, for all of its different sandwiches. if a company ordered n sandwiches for a luncheon, which equation could be used to find the total price, p, that the deli charged for the sandwiches?

What 2 numbers can be multiplied to equal 18 but can also be subtracted or added to each other to equal 9

If each interior angle of a regular polygon measures 144º, how many sides does it have?

A merchant is selling wind chimes from booth at a flea market he rents his space for $125 per day The Profit from each wind chime sold is $12 his goal is to make $3500 and a five day work week which equation represents how many times he needs to

What is the 100th term in the pattern with the formula n + 7? 100 93 107 7

I will award brainliest to whoever gives the best answer ... Using the distributive property, which of the following expressions is equivalent to 6 (3 + 6y) ? A. 9 + 6y B. 18 + 6y C. 9 + 12y D. 18 + 36y