Solve the system of linear equations by substitution. y-x=0 2x-5y=9

A blueprint for a house has a scale of 1in for every 30ft. A wall in the blueprint is 7 in. What is the length of the actual wall?

Explain why the two equations below have the same solutions. x + 3y = - 1 - 2x - 6y = 2

A rectangular prism has a length of 7 cm, a width of 4 cm, and a height of 2 C The prism is filled with cubes that have edge lengths of 1/2 cm How many cubes are needed to fill the rectangular prism?

What is 83.9 rounded two decimal places

Solve 2x^3 + x^2 - 13x + 6, given that one of its factors is (x - 2) with an area model

Con 36 huevos cuántas docenas tienes? y decenas completas

Carolyn is searching online for tickets to a concert. Two weeks ago, the cost was $30. Now the cost is $39. What is the percent increase? What would be the percent increase if the ticket agent charges an additional $4.

A fair coin is flipped six times. what is the probability that heads occurs exactly 4 times if it is known that heads occurs at least four times?

2 (x-3) (x-3) - 8 in standard form

What is (-2/5) ^0 and - (6) ^0