How to square root on the distance formula

Marissa subtracting a negative number from a positive number her result was negative is that reasonable explain

A triangle has sides with lengths of 2x - 7, 5x - 3, and 2x - 2. What is the perimeter

Mike has a 9 foot long board. He needs to cut it into 12 equal parts. How many feet long should each section be?

Find the surface area of the triangular prism (above) using its net (below)

X/3 = 125 solve it A) 5 B) 125 C) 25 D - 5

Assume the time spent (in days) waiting for a heart transplant for people ages 35-49 can be approximated by a normal distribution with mean of 203 days and a standard deviation of 25.7 days.

A falling stone is at a certain instant 90 feet above the ground. Two seconds later it is only 10 feet above the ground. If it was thrown down with an initial speed of 5 feet per second, from what height was it thrown?

Are 5p and 3p like terms

In a random sample, 328 out of 920 12th graders in California smoked marijuana within the last year. Answer questions 1-4, and round to 3 decimal places.

How can I solve? m (m-1) = 812