Answer:
60 dimes 35 nickels
Step-by-step explanation:
First we substitute, what that means in here is that 2(c +3)
Or minus I can't see the sign but what we do is we substitute 2 with c so that becomes 2c and 2 with 3 and that becomes 6 which gives us 2c + 6 = c-13
Now we can either add 13 on both sides or subtract 6 on both sides, we can do this because they are like terms even if they are negative because they don't have any variable behind it. We will add 13 because we do the opposite of the sign you are solving some get 2c + 19 = c now we subtract 2c on both sides and we get 19 = -1c and at the end we divide -1 on both side and we get -19 = c or
c = -19.
We have been given a table of quiz scores whose standard deviation is 5.6. We are asked to find the test scores that are within one standard deviation of the mean.
First of all, we will find the mean of the test scores using average formula.




The scores within one standard deviation would be mean plus one SD and mean minus one SD that is:


Therefore, the quiz scores 17.15 and 28.35 are within one standard deviation of the mean.
Answer:
The answer is "140".
Step-by-step explanation:
Calculating the average cost:

To minimize average cost we have to find x for wich A'(x)=0