A father who is 42 years old has a son and a daughter. The daughter is three times as old as the son. In 10 years, the sum of all their ages will be 100 years. How old are the two siblings at present?

why do you sometimes have only one multiplication sentence for an array?

Passing through (2,3) and parallel to y = x - 4

30 Solve by elimination: 2x - 3y = - 6 -2x - 2y = 26,

Which of the following value pairs can be used as m and n to factor the expression 9x^2-12x-5 A. 3, 15 B. - 3, 15 C. 3, - 15 D. - 3, - 15

A professional football field is 160 feet wide. What is the width of the field in yards?

How can you find the surface area of a cube with a edge length 3 in?

What is (x-4) ^2=28 when solved as a quadratic equation such as - 4+-2 square 7

To rent a certain meeting room, a college charges a reservation fee of 15 and an additional fee of 5 per hour. The chemistry club wants to spend less than 45 on renting the room.

A triangle with no equal sides is called a scalene triangle, right? or no

An athletic field currently has a width of 100 yards and a length of 60 yards. The school plans do expand both the length and the width of the field by x yards. What polynomial in standard form represents the area of the expanded athletic field?