Answer:
n = d+30 since he has 30 more nickels than dimes, to make them equal you have to add 30 to the dimes.
:
n+d = 150 substitute for n:
d+30+d = 150
2d = 120
d = 60 he has 60 dimes and 150-60 = 90 nickels
Answer:
700 teens
Step-by-step explanation:
If five out of 7 teens do homework every night
There are 980 teens
How many out of 980 teens would do homework every night?
Firstly divide 980 teens by 7
Which is 980/7=140
Next is,
Out of 7 teens, there are 5 who do homework every night
So, multiply 140 by 5
140×5=700 teens
This means, the reasonable prediction of teens who do homework every night out of 980 is 700 teens
Answer:
Use the formula pi r^2. You are finding the radius. Plug the numbers in.
It is three in distrubitive property
This possible sample should have the same probability of being selected. They all the same percentage or probability to be selected all of each possible sample. So the answer in this question is they all have the same probability of being selected when a simple random sample of size n from an infinite population of size N is to be selected.
