How to know if two lines are parallel or perpendicular?

25 hundredths in simplest form

Find the smallest and largest whole numbers that will round to: 1030 to the nearest 10

2 times the square root of 49, what are all the possible answers? 49 7 14 etc?

Teach me how to divide and show my work

Two of the lights at the local stadium are flickering. They both just flickered at the same time. One of the lights flickers every 777 seconds and the other light flickers every 888 seconds.

You can spend 5 dollars the eraser costs 1 dollar the pencils cost. 25 each. How many pencils can you buy?

From the sum of 5 - 9i and - 4 + 7i, subtract 14 - 3i.

Micah deposited $4000 between two savings account. One account earns 4%

What percent of 928 is 464?

This is for my sister. Karim says he can fold a circle more than 15 ways. Is it correct? Explain