What does (3x+7) (3x-7) equal

Liana's class was going on a very exciting school trip, but when Liana got to school, the school bus had already left! Frantic, Liana begged her mom to drive her to catch up with the bus. Liana's mother has to decide quickly whether she can do it.

A class has a ratio of 3 boys to 5 girls. If there are 135 more girls than boys, how many boys are there.

Can you factor 9x^2+25?

Solve the proportion 4/5=28/x using two different methods. explain each method

Write an expression for the product of z and 113, minus 300.

A division equation with the answer of - 20

Put 12/15,3/5,7/15,3/7 in smallest to greatest order

Solve the equation. |x + 7| = 12 Select one: a. {-19, - 5} b. {-19, 5} c. {-5, 19} d. {5, 19}

The water level of a lake fell by 1 and one half in. during a 1 and two thirds -week-long dry spell. Simplify the complex fraction below to find the average rate at which the water level changed every week.

A husband and wife celebrate their birthdays on the same day of the month, but in different months. Every year, their birthdays fall on the same day of the week.