Answer: D. -40x^3+25x^2+45x
Answer:
49Pi cm^2
Step-by-step explanation:
Area of a circle = Pi r^2
Radius r = 7
Area = Pi x 7^2
= Pi x 7 x 7
= 49Pi cm^2
One kiloliter is equal to one hundred dekaliters. Multiply
to get your answer :)
B. y = 2x-2
14 = 2(8) + b
14 = 16 + b
-2 = b
For this case, the first thing we must do is define variables:
x: number of quarters
y: number of nickels
We now write the system of equations:
x + y = 68
0.25x + 0.05y = 13.40
Solving the system we have:
x = 50
y = 18
Answer:
they have:
quarters = 50
nickels = 18
