X - 20 + x equals 180

A designer wants to make use of a half-spherical cistern in a water system. If the cistern has a diameter of 6 feet, how many gallons of water can it hold?

A train traveling 30 miles per hour how long will it take to travel 180 miles

Y = - 7x + 12, is the slope positive or negative?

What is the value of log7343?

Millie has a box of 1 hundresds cubes she also has a bag of 70 cubes how many trains of 10 cubes can she make

How many times more people attended shows in 2006 than in 2009? 17.1 in 2006 and 14.3 in 2009

At a local college, of the male students are smokers and are non-smokers. Of the female students, are smokers and are non-smokers. A male student and a female student from the college are randomly selected for a survey.

20 - (4x + 4) = 4x + 1 - 8x

The product of j and 160, decreased by 289 is the same as n

Why do we use cubes instead of squares to measure the volume of a rectangular prism?