How to find if two lines are perpendicular?

Mrs. Juarez graded ten English papers and recorded the scores. 92, 95, 100, 62, 88, 90, 100, 96, 89, 98 Which statements are true? Check all that apply.

Dixon and his little sister Ariadne stand next to each other on the playground on a sunny afternoon. Their mother measured their shadows. Dixon's shadow is 18 feet long and is 18 feet long and ariadne's shadow is 15 feet long.

The Lupu Bridge in China is 12,795 ft long. The Hart Bridge in the USA is 3,845 ft long. About how much longer is the Lupu Bridge than the Hart Bridge? Round each length to the nearest thousand to find the answer.

Computer amount of interest earned and the following simple interest from a deposit of 5500 at 6% for three years equals?

Evaluate the expression for n=60. what does your answer represent

Order - 3.93, 3 8/9, - 3 11/12, and 3.9 from least to greatest. (The 3.9 goes infinitly)

What is the distance between (8,-3) and (4,-7)

What is 105 to 150 simplified as a ratio

Write the product of - 2 and (3 - 5a) as the sum of two factors

Any number that can be written as a fraction is classified as a (n) number Rational Irrational