60% of the class are girls. there are 18 girls

- how many students are there in the class?

- how many boys are there?

In a science experience a plant grew 3/4 inch one week and 1/2 inch the next week. Use a common denominator to write an equivalent fraction for each fraction.

X+2y=-1 and 4x-4y=20 solve by substitution

Expended form 1.87268

Log (10 - 4. x) = log (10 - 3x)

The method of Problem 20 can be extended to second order equations with variable coefficients. If y1 is a known nonvanishing solution of y′′ + p (t) y′ + q (t) y = 0, show that a second solution y2 satisfies (y2 / y1) ′ =

Max travel 2 miles and Jason travel 20 miles. together they travel

A school custodian walks gymnasium floors measured 20 feet by 20 feet how many square feet did she have to work

The sum of a number and 17 is no less than 26

What numbers multiply to be - 60 and add to be - 11

A pair of two distinct dice are rolled six times. suppose none of the ordered pairs of values (1, 5), (2, 6), (3, 4), (5, 5), (5, 3), (6, 1), (6, 2) occur.