5x^2+15=51; square root property

Mr. Yan is competing in a local biathlon, a race which consists of a biking and a running event. The race is a total distance of 11.42 miles. If the biking event is 8.7 miles, what is the distance of the running event?

If it takes 8 inches of ribbon to make a bow how many bows can be made from 3 feet of ribbon? Will any be left over? if so how much

5. Write two inequalities to compare - 17 and - 22.

Find the least common multiple of 3,4,5,6,10,15

If AB:BC is 3:11 solve for x

Given that a, b, and c are non-zero real numbers and a + b ≠ 0, solve for x. ax + bx - c = 0

What value should be added to both sides of the equation X2 + 12 X + 6 equals - 5 to solve the question by completing the square

The cost y for a company to produce x T shirts is given by the equation y=15x+1500

Derivative of F (t) = e8t sin 2t

If Ivan has 2/3 hours in his MP3. Is there is more than or less than 60 minutes of jazz on Ivan MP3 player? Explain how you know