Given equations A and B as 2/5x+y=12 and 5/2y-x=6, respectively, which expression will eliminate the variable x?

Evaluate the function for x = 2 and x=7, when ffx) = 4x+61

Find the height of a triangle whose base is 2 square root 2 inches and area is 8 square root 6 square inches.

89,678 to the nearest hundred

One number is 1 less than a second number. twice the second number is 6 less than 4 times the first. find the two numbers.

I need to know £400 in euros and how to convert it

On a very cold morning, it was - 8°F. As the day went on, the temperature rose 2 degrees each hour. Which equation shows the temperature over time? A. y = - 2x + 8 B. y = - 2x - 8 C. y = 2x + 8 D. y = 2x - 8

Write the number 0.72 as a fraction or mixed number.

1. Write a numerical expression for the phrase "twelve groups of the sum of fourteen and 10." 2. Write an algebraic expression for the phrase "five groups of a number added to seventeen."

What is 2x + 8 - 22x = - 2

John wants to and 2/3 miles and Mike runs 1 and 2/3 miles which operation would I use to see how far they run combined