Solve using the addition or substitution method.

2x + 4y = 8

x = 3 - 2y

What is the answer for 623 divided by 20?

The ideal length of a particular metal rod is 35.5 cm. The measured length may vary from the ideal length by at most 0.035 cm. What is the range of acceptable lengths for the rod?

Find the missing term. If y = 1 + i, then y^3 - 3y^2 + (?) - 1 = - i What would the "?" equal to. A) - 3y B) - 3y + 1 C) 3y D) 3i

A jewelry box is in the shape of a right rectangular prism with a length of 8.25 cm, a width of 5.5 cm, and a height of 4.5 cm. How many cm² of gift wrap is needed to completely cover the box? Enter your answer in the box. I believe the answer is 4.

What some things that apply to quadratics

Janelle ate 82% of the pie. What fraction of the pie remained? Janelle ate 82% of the pie. What fraction of the pie remained?

The hu family goes out for lunch and the price of the meal is $45. the sales tax on the meal is 6%, and the family also leaves a 20% tip on the pretax amount. what is the total cost for the meal?

Carla is saving money for a trip. She already has some money in her savings account and will add the same amount to her account each week at the end of two weeks Carla has 130 at the of 8 week she has 280 write a linear function y=

Let g (x) = x^2-5x+2 g (-1)

What does three fourths minus one half equal?