Answer:
1409.28
Step-by-step explanation:
hope this helps :)
Answer: m = -5/8
Step-by-step explanation:
The general equation for slope is rise over run, also known as:
m=(y2-y1)/(x2-x1)
From the points (x, y), we can get all the variables we need.
(-1, -7) gives us x1 = -1 and y1 = -7
(-9, -2) gives us x2 = -9 and y2 = -2
If we plug all the values in, we get:
m = (-2 - (-7))/(-9 - (-1))
m = (-2 + 7)/(-9 + 1) the negatives cancel
m = (5)/(-8)
m = -5/8
Answer:
The number of nickels is 29 and the number of dimes is 12
Step-by-step explanation:
Let
x -----> the number of nickels
y ----> the number of dimes
Remember that
1 nickel=$0.05
1 dime=$0.10
we know that
0.05x+0.10y=2.65 -----> equation A
x=3y-7 ------> equation B
Solve the system by graphing
The solution of the system is the intersection point both graphs
The solution is the point (29,12)
see the attached figure
therefore
The number of nickels is 29 and the number of dimes is 12
Since she answered 90% of her quiz correct, that means if she were to answer 10 questions, 9 would be correct. Lucky for us, 50 is a multiple of 10. If you multiply 10 by 5, you'd get 50. You would also need to multiply 9 by 5 as well. When you do this you'd get
45/50 correct. (divided them to make sure you get .90 if so, I'm right :)
Call the production cost 'C', the revenue 'R' and the number of CDs 'n':
C=2000+5n
R=10n
By definition Profit P = R-C, therefore P=10n-2000+5n = 5n-2000.