Answer:
9
Step-by-step explanation:
First, write the equation.
C(n) = 4 + 3n
We know that C(n) = 31, so we can substitute it.
31 = 4 + 3n
Subtract 4 from both sides to isolate the term with the variable.
27 = 3n
Divide both sides by 3 to get the variable by itself.
9 = n
Answer:
The mean is 50
Step-by-step explanation:
To find the mean, add up all the numbers and divide by the number of numbers
(35+ 40+ 56+ 52+ 67)/5
250/5
50
Answer:
since the angle is up, x is the adjacent
cos= adjacent/hypotenuse
12 is the hypotenuse
cos35= x/12
cross and multiply:
x= 12*cos 35
I hope this will be helpful
Answer:
2n-8
Step-by-step explanation:
twice n is 2n. decreased by 8 is the -8