To make the sure the results did not happen by chance, the coach can ensure that the protein bars are the only difference between the two groups. For example, he can make sure that both groups are drinking the same amounts of water and getting in the same amount of practice; that way, he will be able to determine that one group is performing better due to the protein bars only. Also, the coach can repeat this experiment multiple times to make sure that the results weren't a random, one-time thing.
Answer:
18
Step-by-step explanation:
10/0.5 = 20
20 * 0.9 = 18
Hi,
81 is 37.5% of 216.
"1. We assume, that the number 37.5 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 37.5, so we can write it down as 100%=37.5.
4. We know, that x% equals 81 of the output value, so we can write it down as x%=81.
5. Now we have two simple equations:
1) 100%=37.5
2) x%=81
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=37.5/81
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.
7. Solution for 81 is what percent of 37.5
100%/x%=37.5/81
(100/x)*x=(37.5/81)*x - we multiply both sides of the equation by x
100=0.46296296296296*x - we divide both sides of the equation by (0.46296296296296) to get x
100/0.46296296296296=x
216=x
x=216 "
Have a great day!
Answer:
$260
Step-by-step explanation:
Actual price + 8% of actual price=$280.80
Let x= actual price
8% of actual price=8/100 of x
=0.08x
x + 0.08x=$280.80
1.08x=$280.80
x=$280.80/1.08
x=$260
Price of the jacket before sales tax=$260
Check:
8% sales tax of $260
=8% of $260
=8/100×$260
=0.08×$260
=$20.8
Purchasing price= actual price+ sales tax
=$260+$20.8
=$280.80
