Explain and correct the error made by a student who simplified this expression.

-2x - 4x + 8y - y

(-2 - 4) x + (8 - 0) y

-6x + 8y

A sample of ore is found to be 0.0042% gold and 0.049% diamond. What is the percentage of matter in the ore that is neither gold nor diamond?

What's the improper fraction of 1 5/8

The product of 4.7 and 6.5 equals 30.55 what is the product of 4.7 and 0.65 4.7 and 65

Cindy has 34 meters of fencing. she plans to fence in a rectangular dog run that is 2 meters wide.[remember, the formula for the perimeter of a rectangle (the distance around) is p=2L+2w, where L=length and w=width. how long can the run be made?

The total cost for a bucket of popcorn and 4 movie tickets is $56. The total cost for the same size bucket of popcorn and 6 movie tickets is $80. The cost of a bucket of popcorn is $8.

If the public debt of the United States in 2004 was $7,379,052,696,330.32 and the budget deficit in 2005 was $553,656,965,393.18, what was the public debt in 2005?

Line segment AB has a length of 4 units. It is translated 1 unit to the right on a coordinate plane to obtain line segment A prime B prime. What is the length of A prime B prime?

A swimming pool had 2.5 million liters of water in it. Some water evaporated, and then the pool only had million liters of water in it. What percent of the water evaporated?

What is one fifth of 35

Which number is less than 0 bigger than 1