Answer:
There are 42 quarters (and 6 dimes).
Step-by-step explanation:
The given ratio is 2:14. But this does not tell us how many dimes nor how many quarters we have. Instead, it's a ratio. Modify this by multiplying numerator and denominator by n and then find n:
Number of dimes 2n
----------------------------- = -----
Number of quarters 14n
Then the total number of coins is 2n + 14n =48, implying that:
16n = 48, or n = 3.
Then the number of dimes is 2(n) = 2(3) = 6, and that of quarters is 14(n) =
14(3) = 42.
There are 42 quarters (and 6 dimes). Notice how the total of 42 and 6 is 48.
X=22. The supplementary angle is 90°, so the 66° angle, plus (x+2) has to add up to 90° too.
C I believe it not so sure
Answer:
Correct option: C -> 2%
Step-by-step explanation:
To find this probability we just need to divide the area of the bull's-eye circle by the total area of the outer circle.
The area of a circle is given by the equation:
![area = \pi * radius^2](https://tex.z-dn.net/?f=area%20%3D%20%5Cpi%20%2A%20radius%5E2)
The outer radius is 14 cm, so:
![outer\ area = \pi * 14^2 = 196\pi\ cm^2](https://tex.z-dn.net/?f=outer%5C%20area%20%3D%20%5Cpi%20%2A%2014%5E2%20%3D%20196%5Cpi%5C%20cm%5E2)
The inner radius is 2 cm, so:
![inner\ area = \pi * 2^2 = 4\pi\ cm^2](https://tex.z-dn.net/?f=inner%5C%20area%20%3D%20%5Cpi%20%2A%202%5E2%20%3D%204%5Cpi%5C%20cm%5E2)
So the probability is:
![inner\ area / outer\ area = 4\pi / 196\pi = 0.02 = 2\%](https://tex.z-dn.net/?f=inner%5C%20area%20%2F%20outer%5C%20area%20%3D%204%5Cpi%20%2F%20196%5Cpi%20%3D%200.02%20%3D%202%5C%25)
Correct option: C