Answer:
Step-by-step explanation:
The error in rounding a number is half of the unit of measure.
The number was rounded to the nearest 0.1 unit so the error is 1/2×0.1, which equals 0.05.
Now we add 3.7 and 0.05, which equals 3.75 and we also take 3.7 - 0.05, which equals 3.65
So, the error interval is:
64 divided by 8 = 8
So you're answer would be 8
Answer:
72°
Step-by-step explanation:
There are 5 blades, equally spaced. So the angle between adjacent blades is 360° / 5 = 72°. So you can rotate the fan 72° and the blades will align again.
I did most of it for you-
Volume of the cone is 13.1
Volume of the cylinder is 18.9
Now, you just subtract two of the flat circular surfaces, because the two shapes are attached, therefore those parts are not surface area. And there is your answer.
Complete question :
At camp in Green Bay, Wisconsin, 7/9 of the participants were from Wisconsin. Of that group 3/5 were 12 years old. What fraction of the group was from Wisconsin and 12 years old?
Answer:
7/ 15
Step-by-step explanation:
Fraction from Wisconsin = 7/9
Fraction who are 12 years old = 3/5
Fraction who are from Wisconsin and 12 years old
(Fraction from Wisconsin * Fraction who are 12 years old)
(7 / 9 * 3/ 5)
= (7 * 3) / (9 * 5)
= 21 / 45
= 7 / 15
