Joan and Jane are sisters. Jean is Joan's daughter and 12 years younger than her aunt. Joan is twice as old as Jean. Four years ago, Joan was the same age as Jane is now, and Jane was twice as old as her niece. How old is Jean?

Guillermo used the fact that a highway bus traveled 275 miles in 5 hours to find the unit rate. How can he check his answer?

Decide if the following change is an increase or decrease. then determine the percent of change. 48 inches to 30 inches

The product of two consecutive even integers is 840 find these numbers

the graph shows the relationship between the volume of a rectangular prism and the volume of a square pyramid

The expression below shows the population of butterflies in a forest after 4x years. f (x) = 40 (1.04) 4x Which of the following is an equivalent function? a. f (x) = 40 (4.1600) x b. f (x) = 480 (1.04) x c. f (x) = 40 (1.1699) x d. f (x) = 480 (4.

Factor completely 2x² - 12 + 10

On a recent day one US dollar was worth 1.09 euros. If you were to exchange 157 euros on that day how many US dollars would you have received? -$111.09 -$144.04 -$155.91 -$171.13

If the volume for 3-D pyramid A is 200 cm3 and the volume for 3-D pyramid B is 800 cm3, how many times bigger is the volume of pyramid B than pyramid A? is it 4 or 0.004

What is the percentage chance of a solution 150 g active ingredient in a total of 1000 mL of solution

Three people toss a fair coin and the odd one pays for coffee. if the coins all turn up the same, they are tossed again. find the probability that fewer than 4 tosses are needed.