hector is five years less than double mary's age. Mary is 12 years old. how many years old is Hector?

Round 3.45 to the nearest whole number

9x-7i > 3 (3x-7u) Solve For I

The tens digit of a certain number is five more than the units digit. The sum of the digits is 9. Find the number.

Solve for the variable in the following proportion. n : 1/2 as 6 : 1

What is the area, in square inches, of this quadrilateral? 8 in. 10 in.) 10 in. 8 in.

write an algebraic expression for the following: the product of 5 and the sum of 9 and y. if y = 3 what's the value of the expression

Find the volume of a shipping crate with the length of 2 meters, a width of 1.5 meters, and a height of 3 meters.

The larger of two numbers is 15 more than the smaller number. Five times the larger number is 40 more than twelve times the smaller number. Find the num

You want to find the average cost of the transportation you have used. This is your list. Train tickets: £8.50 Coach tickets: £7 Bus tickets: £5.70 Taxi fares: £9 Flight tickets: £180 You have worked out your mean average to be £42.04.

A contractor is building the base of a circular fountain. On the blueprint, the base of the foundation has a diameter of 18cm. The blueprint has a scale of three centimeters to four feet.