Use a ratio box to solve this problem. The ratio of new pens yo used pens in the box was 4 to 7. In all there were 242 new pens and used pens in the box. How many new pens were in the box?

Consider the following statement: ∀ a, b, c ∈ Z, if a - b is even and b - c is even, then a - c is even. Write the converse and inverse of this statement.

Solve for x: 4x + (2x + 4) > 12

6x²y²,4xy²,12xy³ LCM: GCF:

Which problem could be solved by evaluating the expression 9 * (-2) ?

What integer is the opposite of - 3?

How many triangles and how many rectangles form a rectangular pyramid?

Mrs. Peters' classroom is 14 feet by 18 feet. She wants to put a border around all the walls of her classroom just below the ceiling. How many feet of border does she need to buy?

A city is growing at the rate of 0.3% annually. If there were 3,278,000 residents in the city in 1992, find how many (to the nearest ten-thousand) are living in that city in 2000. Use y=3,278,000/left (2.7/right) ^{.003t}

Jose pack54 CDs into smallboxes. Each box holdsome 9 CDS. how many boxes does jose pack to hold all 54 CDs

A winery has a vat with two pipes leading to it. The inlet pipe can fill the vat in 4 hours, while the outlet pipe can empty it in 10 hours. How long will it take to fill the vat if both pipes are left open?