Danielle is x years old. Her sister is 5 years older and her brother is half Danielle's age. Write an expression in simplest form for the sum of their ages.

Two brothers build a pyramid-shaped fort. If the fort is 8 feet wide at its base, what expression could be used to calculate the height of the fort?

How to expand: 2.5 (10 x+8) + 3y

Square root of 72x^2 z^3

What is 5 17/20 as a decimals

One side of a square flower bed is 21 feet long. How many plants are needed if they are to be spaced 21 inches apart around the outside of the bed?

Are independent random samples, with thevariables xi normally distributed with mean μ1 and variance σ21 and the variables yi normallydistributed with mean μ2 and variance σ22.

Nearest hole number to 2.81

Spreadsheet software can be used to determine the amount of simple interest owed on a 30 day note. what mathematical operations would be used?

How many ounces of cinnamon is needed to bake cookies with 7 and 1/2 cups of flour if 1/3 ounce is cinnamon is needed for each 1 and 1/2 cups of flour?

The area of a parking lot at an amusement park is 1310 square meters. A car requires 5 square meters and a bus requires 32 square meters of space. There can be at most 135 vehicles parked at one time. If the cost to park a car is $5.