Well we call that a decimal which looks like this: .
A decimal point is to separate or decrease a number by a certain value.
Hope this helped! :)
The answer d)
Explaining
y = -18 + 3
y= -15
Elaine's piece is bigger because when you look at the tenths place, you can see that 1 is bigger than 0.
The answer is 3.16 ft
The surface area (SA) of the rectangular prism is:
SA = 2lw + 2ld + 2wd
However, the pool is without the top side, so the area of the top side should be excluded from the surface area of the pool. The surface area of the rectangular pool is:
SA = lw + 2ld + 2wd
We know:
SA = 210 ft²
l = 9 ft
w = 10 ft
d = ?
210 = 9 * 10 + 2 * 9 * d + 2 * 10 * d
210 = 90 + 18d + 20d
210 - 90 = 38d
120 = 38d
d = 120/38
d = 3.16 ft
The answer is A. because for you to find the answer you have to subtract so it would be 55.75-12.5=43.25
