For which set of lines is it reasonable to state that the two lines are almost perpendicular to each other?

a. y = 2.1x 3, y = 2.1x 5

b. y = 0.9x 5, y = - 1.26x 8

c. y = 5x 1.25, y = - 5x 1.25

d. y = 3/4x 0.28, y = 4/3x 0.29

Ronnie purchased a lawn mower. the cost of the mower, including an 8% sales tax, was $648. find the cost of the mower before tax

Using Rigid motion, explain in detail, why triangle ABC must be congruent to triangle DEF

9x + 27 = - 72 what is x

What would 4 (2+x) = 18-x equal

Which is a unit rate? A. 47c for 2 pens B. 20 gallons for 2 hours C. 15 hours for 3 months D. 18 miles driven in a week

10 x (5 x 4) = (b x 5) x 4

5 Connie is working to earn $200. She earns $25 mowing her grandmother's lawn and $60 for a day of housecleaning. Which decimal represents the part of the money Connie still needs to earn and why? A 0.575 B 0.115 C 0.425 D 0.85

A farmer sells 9.7 kilograms of apples and pears at a farmer's market. 1/4 of the weight is apples and the rest is pears. How many kilograms of pears did she sell at the farmer's market What is the fraction

An penguin is 45 inches tall. It is 24 inches taller than a rockhopper penguin. Write and solve an equation to find the height of a rockhopper penguin. Is your answer reasonable? Explain.

Kyra observed that 85% of the students at a library liked reading mystery stories. If 30 students at the library did not like reading mystery stories, the number of students at the library who liked mystery stories was.