A bag contains 60 marbles, some blue and some green. The ratio of blue marbles to green ones is 1 : 5. How many blue marbles are there?

Which of the following is the best estimate for - 2 · 7.89 + : (-4.17) ?

3/4 (x+8) = 9 in this equation shown what is the value of x that makes the equation true

The space shuttle flight control system called PASS (Primary Avionics Software Set) uses four independent computers working in parallel. At each critical step, the computers "vote" to determine the appropriate step.

Find (109) ^2 - (108) ^2

A recipe uses 3 cups of flour and 2 cups of sugar right the ratio of cups of flour to cups of sugar as a fraction

What fraction is equivalent to nine twelths?

Solve for b P=+b+c+d

Which expression is equivalent to 9x^3+18x^2-x-2/3x+1

Estimate then find the product 1564 * 5

Find the perimeter and area of a rectangle with a length of 3.2 m and width of 1.5. A) p=4.7 m; A=2.25m^2 B) p=4.7 m; A=4.8m^2 C) p=9.4 m; A=2.4m^2 D) p=9.4 m; A=4.8m^2