How to solve equations with 2 variables with substitution and elimination?

What operation would you use to convert cups to gallons? Explain.

A support wire stretches from the top of a pole that is 30 feet tall to an anchor in the ground 40 feet from the base of the pole. How long is the wire?

Which inequalities are true? Check all that apply. 0.5<23 015<24 o ſa < ſ 55 Ovoc3 0629 <45<5

1/3 of Emily's age in algebraic expression

When we move upward and to the left along a linear, downward-sloping demand curve, price elasticity of demand a. first becomes larger, then smaller. b. always becomes larger. c. always becomes smaller. d. first becomes smaller, then larger.

In the equation x=8y, what is the unit rate?

Algebra 1 what is the solution to the system? 7x+5y=19 -7-2y=-16 A: (2,1) B: (1,2) C: (7,5) D: (-7,-2)

6x (-3) I don't understand I need answer

A plant has a height of 8 1/4 inches what is the height of the plant after it grows 1 7/8 inches?

Edin has £300 in his savings account. His bank offers him a fixed 5% simple interest rate per annum, for a period of 3 years. How much interest will he have earnt after 3 years?