Combine like terms.
7g + 4g + 3g + g = 15g
15g - 13g = 2g
2g = 10
Divide by 2 on both sides.
g = 5
Surface area is what it seems to be. All of the area of the solid's faces together. Like a cube, just find the areas of all of the squares that make the cube then add them together.
There is a decrease in power. It can be concluded that there has also been a change in:
A) current or voltage.
We are 93,000,000 miles away from the sun. The answer should be 9.3 x 10^7.
30.
3/4 is equal to 75%, so take 75% of 40 by multiplying .75 by 40 to get 30