Mr. george owns 425 acres of land. if he divides the land into half-acre plots, how many plots will he have?

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x

What does independent variable and dependent variable mean in math?

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?