Rounding decimals is very similar to rounding other numbers. If the thousandths place of a decimal is four or less, it is dropped and the hundredths place does not change. For example, rounding 0.843 to the nearest hundredth would give 0.84.
If the thousandths place is five through nine, the hundredths place is increased by one. The decimal 0.846 rounded to the nearest hundredth is 0.85.
29/337 is not a decimal and I'm not sure why you are dividing it. Please specify. :-)
Answer:
-6*-2*2 = 24
-3*2*1 = -6
Once you found the answer inside both the parenthesis, you need to add them
24+-6
= 24-6
= 18
X = measure of each of the legs
"perimeter is 8 more than 2 times one of the legs" ---> P = 2x+8
P = 28 is the given perimeter
So,
P = 2x+8
28 = 2x+8
2x+8 = 28
2x = 20
x = 10
If x = 10, then the two legs add up to x+x = 10+10 = 20
Leaving P-20 = 28-20 = 8 inches left over for the base
You have the correct answer (choice D, 8 inches) though your steps are a bit confusing at some parts. Such as the part where you wrote 2x = 10 twice. I think I know what you were trying to say.
D.
y=2x+5
Sub in one pair (5,15)
15=2(5)+5
15=10+5
15=15 [Correct]
AND
9=2(2)+5
9=4+5
9=9 [Correct]
