Solve by substitution

X-2y = - 2

Y=2x+4

When f (n) = 12 what is the value of n

Kate sold 1 2 of her paintings and purchased 7 more. If Kate has 21 paintings now, how many paintings did she have to begin with?

Twice a number increased by 5 is less then - 9

A set of equations is given below: Equation E: a = 5b + 1 Equation F: a = 3b + 4 Which statement describes a step that can be used to find the solution to the set of equations? Equation F can be written as 5b + 1 = 3b + 4.

A certain amount is given in an amount proportional to a patient's body weight. Suppose a patient weighing 153 pounds requires 249 miligrams of medicine. What is the amount of medicine required by a patient weighing 102 pounds?

What is the numerical expression of 3 divided by the product of 6 and 5

List characteristics of a rhombus sides diagonals angles

F (X) = X+3 g (X) = ? gf (X) = x²+6x+2

X - 62,500 = 0.25y; If a total of 125,000 people voted, how many votes did Maya receive?

If there are 1000 grams in a kilogram in 454 grams in a pound how many pounds are there in a kilogram?