If two lines intersect at a 90 degree angle, what can you say about the lines?

A. They are perpendicular.

B. They are parallel.

C. They are complementary.

D. They are supplementary.

Liliana takes four breaths Per 10 seconds during yoga at this rate about how many breaths would Liliana take in two minutes of yoga

A consumer products company is formulating a new shampoo and is interested in foam height (in mm). Foam height is approximately normally distributed and has a standard deviation of 20 mm.

Three fourths of a pizza is left. If the pizza was originally cut in 1/8 pieces, how many are left

Alexis had a cell phone that cost $65. She recently bought a new phone that cost $79. What was the percent increase in the prices of the phones?

How many 4-digit multiples of 7 are there?

Aurora's bike has wheels with a perimeter of 2.3 meters. When Aurora goes to school the wheels spin 850 times. How long is the road that Aurora does when she goes to school?

Definition of congruent

86.17 hrs divide into 30 days

2. A chain 5 links long is joined to a chain 7 links long. How many links long is the resulting chain?

Evaluate f³+11g-4h when f=3, g=2, h=11