Answer:
1-n² and the second one is (four less then
Answer:190
Step-by-step explanation:
If there are 950 classes over a year and 5 classes then there are 190 classes per class because 950/5=190
Answer:
The cost of printing posters 2 to 100 is $9.
Step-by-step explanation:
The marginal cost of printing a poster when x posters have been printed is
We need to find the cost function.
Seprate the variables.
Integrate both sides.
where, C is an arbitrary constant.
We need to find the value of c(100)-c(1).
Substitute x=100 in the above function.
Substitute x=1 in the above function.
Therefore, the cost of printing posters 2 to 100 is $9.
They cancel out each other
Imagine if you were multiplying
-2 * -3
you would get 6
if you did
-2 * 3
you would get -6 because there isn't another - to cancel it out
I learned it that when you have a negative before a negative, put parenthesis around the second number with the negative, so it looks like this
-(-2)
if you look at the -(- it looks like a plus sign
that probably doesn't make much sense but we cancelling it out is just a rule, we don't really know why we do it
The four would go under neith in the left hand side but I don’t know how to explain it