The answer is b. 9pi because 3^2xpi=9pi.
Answer:
I think it's False
Step-by-step explanation:
i just can't tell if the decrease need to be cut in half or not.
First we define variables:
x = first card original value
y = second card original value
z = third card original value
We write the system of equations:
Andrew bought 3 baseball cards for $ 240:
x + y + z = 240
the first card (at its original value) along with the second card (at its original price) and got $ 320:
2x + y = 320
the first card (at its original value) card along with the third card (at its original price) would have only got him $ 280:
2x + z = 280
Solving the system we have:
x = 120
y = 80
z = 40
Answer:
The original prices for each of the 3 baseball cards is:
(120, 80, 40)
Answer: last option
Step-by-step explanation:
You need to remember the identity:
You need to find the cosine of angle P, then, you can identify in the figure that:
Therefore, the next step is substitute these values into , then you get:
You can observe that this matches with the last option.
Answer:
Step-by-step explanation:
