What is the value of n when 7n-13=5n+7

What is the interquartile range of the following data set 9,30,2,48,42,18,81,5,55,73,11

it takes tom 3 minutes to wash a car, and it takes jerry 6.7 minutes to wash the same car, how long does it take for them to wash the car together?

Could 10.5 cm, 8.0 cm, and 4,0 cm be the side lengths of a triangle?

How many solutions are there to the following system equations? Use the linear combination method. 2d+e=8 d-e=4 A. The solution is (4,0) B. There is no solution C. There are an infinite number of solutions D. The solution is (5,-2)

1. What is the approximate volume of a cone with a height of 6 mm and radius of 18 mm? Use 3.14 to approximate pi, and express your final answer to the nearest hundredth. Enter your answer in the box. 2.

Which is the direct linear variation equation for the relationship? y varies directly with x and y = 12 when x = 4. A. y = 2x + 4 B. y = 3x C. y = x + 8 D. y = x - 8

Walter practices piano for 1/4 hour 1/2 hour or 3/4 hour every other day. If a lion plot shows two Xs above each value of time, what is the total amount of time Walter has spent practicing

Water stations will be placed every 400 meters of a 5 - kilometer race. How many water stations are needed? (hint 1 kilo=1,000 meters)

Jacob has a rectangular garden that has a length of 5.5ft and width of 7ft. How many square feet of seeds does he need to cover his garden?

If a=4, b=5 and c=7, calculate 2a + 3c