Urn 1 = 4 green balls and 6 blue balls, a total of 10 balls
Urn 2 = 6 green balls and 2 blue balls, a total of 8 balls.
Probability of blue balls:
Urn 1 : P = 6/10
Urn 2 : P = 2/8
Probability that both balls are blue:
6/10 * 2/8 = 6*2 / 10*8 = 12/80 = 6/40 = 3/20
Answer is B. 3/20
Answer:
A) X=pi/2 or X=-pi/2
B) X=pi/6 or X=-pi/6
C) X=pi/4 , 3pi/4, 5pi/4 and 7pi/4
D) X= 1-cos^2(x/2)
E) X= pi/3 +2pi N, 5pi/3+2pi N
Step-by-step explanation:
Don't even bother asking. :)
Answer: 4 blocks west, 6 blocks south
Step-by-step explanation: east and west are opposites 5-1=4 blocks west. 4+2=6 blocks south. the direction would be south-west.
You said x + 2/5 = 12
It might be easier to handle if we use the decimal for 2/5.
x + 0.4 = 12
Subtract 0.4 from each side: x = 11.6
That's all there is to it. I'm sorry I can't make it
more complicated for you.
Answer:
He needs 92 on his last test.
Step-by-step explanation:
Mean score:
The mean is the sum of all scores divided by the number of tests.
In this question:
Scores of 85, 89, 85, 89 and x(the last one).
5 tests.
We want a mean of 88. So we find x for a mean of 88.
![\frac{85 + 89 + 85 + 89 + x}{5} = 88](https://tex.z-dn.net/?f=%5Cfrac%7B85%20%2B%2089%20%2B%2085%20%2B%2089%20%2B%20x%7D%7B5%7D%20%3D%2088)
![348 + x = 440](https://tex.z-dn.net/?f=348%20%2B%20x%20%3D%20440)
![x = 440 - 348 = 92](https://tex.z-dn.net/?f=x%20%3D%20440%20-%20348%20%3D%2092)
He needs 92 on his last test.