Answer:
14.135
Step-by-step explanation:
6 divided by 2 (half) = 3, π·32≈28.27433 dived by 2 (half) equals 14.135
We are given that Donna knit a total of 12 blankets.
She took 4 months in doing it.
To find the number of blankets in 1 month, take ratio of number of blankets to number of months.
Thus, she knit 3 blankets in 1 months
Answer:
-24
Step-by-step explanation:
-21/-7=3
4/-1=-4
12/6=2
Since we are multiplying all three, it will be:
3*-4*2=-12*2=-24
Answer:
(351.04, 368.96)
Step-by-step explanation:
Given that population mean= 360
Std devitaion = 4
margin of error = 2.5%= 0.025
Since population std deviation is known we can use Z critical value
For two tailed critical value for 2.5% would be
2.24
Margin of error = ±Critical value*std deviation
= ±2.24(4)
= ±8.96
Confidence interval =(Mean - margin of error, mean + margin of error)
=
These are made more difficult because you are supposed to figure out what question is being asked in each case.
4. Apparently, you're supposed to determine the fee for rental of each pair of skates. If that fee is represented by x, then the total rental cost for 7 pairs will be 7x. Adding that to the group rate gives the total charge:
... 7x + 9 = 30
5. Apparenly, you're supposed to determine the fraction of a pan of brownies that each student will get. Let that be represented by x. Then the total amount of brownies the 30 students get is 30x. Added to the 7 pans that are donated, the total is the number of pans that were baked.
... 30x + 7 = 9