How can you determine if the graphs of two lines are parallel or perpendicular without graphing the lines

What is the answer to n+7=18?

How far from an airport can an airplane fly and return in 8 hours, if it's outgoing speed is 160 km per hour and it's returning speed is 240 km per hour

Derivative of x^3 + 5y^2=2

What are 2 ways to convert a mixed number to a decimal?

How far will a wheel with a radius of 3.5 feet travel in 500 revolutions? (Use 22/7 for tt)

Last month, Korey's Comics had a gross profit of $2,385 with a monthly revenue of $3,465. Korey expects similar sales this month, but he would like to build up his in-store browsing selection, and purchases an additional assortment of comic books

There was a plate of cookies on the table. Amanda was hungry because she hadn't had breakfast, so she ate half the cookies. Then Beth came along and noticed the cookies. She thought they looked good, so she ate a third of what was left on the plate.

If sales tax is 5%, what is the sales tax on an item costing $65?

You pick a card at random. 2 3 4 5 What is P (5) ? 1% 25% 41% 11%

How do you turn 3.0035 into a fraction