Solve each system of linear equations by

multiplying { - 2x + 2y = 2

{ - 4x + 7y = 16

Simplify the expression. 7 (6x - 4) + 1

One reading at an artic research station showed that the temperature was - 35 degrees Celsius. What is this temperature in Fahrenheit? (question 20)

You place a cup of 200 degrees F coffee on a table in a room that is 67 degrees F, and 10 minutes later, it is 195 degrees F.

Translate the sentence into an inequality. Twice the difference of a number and 10 is less than or equal to - 28. Use the variable y for the unknown number.

Which fraction is equivalent to negative 3 over 7? negative 7 over 3 3 over negative 7 3 over 7 7 over 3

The area of a rectangle is x2-2x-8. the width of the rectangle is (x+2). what is the length?

perform the steps for dividing the two polynomials using synthetic division. state the quotient, q (x), and the remainder, r (x). 2x^5-8x^4+2x^3+2x^2 / 2x^3+1

Can you ever us a calculator to determine if a number is rational or irrational? Explain

What is the value of the algebraic expression if x=1/2, y=-1, and z=2?

The Wares want to buy a new computer. The regular price is $1,049. The store is offering a 20% discount and a sales tax of 4.25% is added after the discount. What is the total cost?