Leah is three times older than her cousin. If they add their ages together, they get 12. Write an equation to represent the word problem and solve the equation and how old is Leah and her cousin?

A homeowner has decided to fill in his in-ground pool because it is no longer used. Assume the pool is rectangular and measures 20 feet wide, 40 feet long, and 5.5 feet deep throughout. Each cubic yard of fill dirt costs $12.

What's the best answer to 7h+3=

What is 3.502 rounded to the nearest tenth

A loaf of bread is removed from an oven and is left setting to cool. It's temperature t minutes after being removed from the oven is given by the equation T (t) = 103e^-0.0182t + 73.

New York city has an elevation of 410 feet above sea level. Omaha, Nebraska is about three times as high. What is the approximate elevation of Omaha?

Three less than a certain number is 12 less than twice the number. Find the number

For each of the following variables, state whether it is quantitative or qualitative. If it is quantitative, specify continuous or discrete. If it is qualitative, specify nominal or ordinal. Whether a gallon of milk is organic or regular. A.

The ratio of girls to boys who participated in the quiz bowl was 7 : 5. there were 42 girls in the competition. how many boys participated

Helen divides up some money to give equally to her eight nieces. If d represents the total amount, enter an expression to represent how much money each niece receives.

How many triangles can be constructed with angles measuring 80 degrees, 80 degrees, and 40degrees A. More than one B. none C. One