Variance= 4.2
Standard deviation = 2.12
Answer:
Take out the area of the full circle first:
A= pi r^2
A= 3^2 x pi
A= 28.274 cm3
Area of smaller cirlces:
A= pi r^2
A= 1^2 x pi
A= 3.14159
Multiply by 2 as 2 circles: 6.28318
Substract unshaded from shaded: 28.274-6.28318
Area of shaded is 21.99082 cm3
Step-by-step explanation:
Since Marco makes 10$ an hour for every dog he walks, we need to see how much money he would make per minute.
To find out how much money he makes per minute, we divide 10.00 by 60.
10.00÷60= 0.16666
Since it's an extended decimal we round it, so he makes about $0.17 per minute.
Next, we multiply 0.17 by 12, so we know how much money he makes every twelve minutes.
0.17×12=2.04
He makes around $2.04 every twelve minutes.
Since he's walking 5 dogs, we multiply 2.04 by five.
2.04×5=10.20
That means <em>he earns $10.20</em>.
I hope you have a wonderful day! :D
25 students got 2 chaperones
so 1 will get 2/25
and thus 8 will get 2/25×8 = 0.64 chaperone
but is it possible?? No chaperone can not be in decimal so at least 1 is required !!
