True or false, if false explain your reasoning. In an equation, you can use any letter as a variable.

The ratio of boys to girls in history class is 4 to 5. How many girls are in class if there are 12 boys in the class.

How does the volume of a cylinder change if the radius is quadrupled and the height is reduced to a third of its original size? A. v = 1/3 pie r^2 * h B. v = 2/3 pie r^2 * h C. v = 4/3 pie r^2 * h D. v = 16/3 pie r^2 * h

The student council sold school folders and notebooks. the notebooks cost $0.75 more than the folders. two folders and two notebooks cost $6.50. what are the prices for the folders and notebooks

Benito spent $1761 to operate his car last year. Some of these expenses are listed below. Benito's only other expense was for gasoline. If he drove 7163 miles, what was the average cost of the gasoline per mile?

A sweater costs a department store $9.00. the selling price of the sweater is $43.99. what is the markup rate of the sweater?

Calculate the probability of completing a straight if you have 4 cards that are in sequence. Do this both for the standard case of one deck of cards, or the casino case of an infinite supply of cards.

If f (x) = x/2 + 8 what is f (x) when x = 10 4 9 13 36

7) Ryan's school is selling tickets to a play. On the first day of ticket sales the school sold 8 senior citizen tickets and 10 student tickets for a total of $182.

Increase 260kg by 10% and then decrease the result by 10%

The perimeter of a rectangle is 354 CM if the width of the rectangle is 82 centimeters what is its length