The sum of the digits of a two-digit number is 14. if the digits are reversed, the new number is 18 more than the original number. find the original number.

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39