the distance between the earth and the moon is about 238,900 miles. round this number to the nearest ten thousand

I think it might be 240,000

(just maybe)

Step-by-step explanation:

14.85 feet & 18.85 feet

Step-by-step explanation:

This is a rectangle with area 10 * 14 = 140 sq. ft.

We want new rectangle to be DOUBLE this area, so that area would be:

140 * 2 = 280 sq. ft.

We will add same amount, x, to both length and width, to get 280. Lets do this and find x. [note: length * width = area]

Area = length * width

280 = (10+x)*(14+x)

280 = 140 + 10x + 14x + x^2

0 = -140 + 24x + x^2

We can solve this by using middle term factorization:

So, we need to add around 4.85 feet to both length and width

New dimensions are 14.85 feet & 18.85 feet