Michael gave 2/5 of his marbles to his sister. He then divided the remainder equally among his 3 friends. If each of his friends receives 12 marbles, how many marbles did Michael have at first?

Whats the diffrence between 25millimeters and 25 centimeters

A kite has a height of 36 inches and a width of 30 inches. Explain how to use the area formula for a triangle to find the area of the kite.

Assume that adults have iq scores that are normally distributed with a mean of 100 and a standard deviation of 20. if all iq scores are converted to z-scores, what would the mean and standard deviation of all z scores be

Mrs Prabhakar open a recurring deposit account of rupees 300 per month at 8% simple interest per annum on maturity he gets rupees 9930 find the period for which he continues with the account

Which centers of a triangle can be located outside of the triangle?

Find the sine, cosine, and tangent of 360 degrees

Use the quadratic formula to determine the exact solutions to the equation. 6x2+4x-3=0

What is the equivalent ration for 12/30

Rewrite the conditional statement in if-then form. 2x+7=1, because x=-3

Find last year's salary if, after a 4% pay raise, this year's salary is $36,920.