What is least common multiple of 28,12,14,21?

Larry is 10 and his sister is 7 years old. In how many years time will their total age be 25 years?

Whats the y intercept of 7y+3x-21=0

Is 12/18 proportional to 20/30

42 is 200% of what number

2x-x+4 (x-4) = 3x-2 (x-2)

What will be the end result for the taxpayer who filed his federal income tax return using the 1040EZ form shown below A he'll owe $173 B he'll receive a refund of $173 C he'll owe $3921 D he'll receive a refund of $3921

A kayaker is paddling at a steady rate for 10 miles with the river current. She can only travel 4 miles against the current in the same amount of time.

Volumes of Cylinders A cylinder has a radius of 14 m and a height of 6 m. What is the exact volume of the cylinder? A. 1176 m3 B. 504 m3 C. 168 m3 D. 84 m3

Simplify the expression. -4 (9 + 3x) - 4 (x - 2)

Solve each equation. 6x^2+1=13