Answer:
P(XX) = 69/190
Step-by-step explanation:
Given:
20 balls, 10R, 3B, 7W.
Two taken without replacement.
Find probability of two identical colours.
P(XX)
Solution:
We use the multiplication rule for the probability of each of the 2 draws
P(RR) = 10/20*9/19 = 90/380
P(BB) = 3/20*2/19 = 6/380
P(WW) = 7/20*6/19 = 42/380
Probability of drawing two identical coloured balls
P(XX) = (90+6+42)/380 = 138/380 = 69/190
Hello!
I believe it would be 4a(8+3)6
By finding the GCF, 4a, we factor what it can go into. The other factors, 3 and 2, are multiplied and put at the end.
Hope this helps!
Answer:
m<A =15, m<B=89, m<C=76
Step-by-step explanation:
A = x
B = 44 + 3x
C = x+61
44 + 3x + x + x + 61 = 180
(you get 5x because you're adding the additional actual value of A to the equation)
now you gotta mush this together
5x + 105 = 180
and now subtract
5x = 75
then divide
x = 15
Great! we found the value of angle A!
now lets plug this in for x in the formulas up top!
B = 44 + 3(15)
B = 44 + 45
B = 89
Yayyyy we're almost done!
C = (15) + 61
C = 76
That's it! that's the value of each angle!
you can check your work by adding the three numbers together to get 180
so lets see
15 + 89 + 76 =
drum roll please
.
.
.
.
180!!
We did it!
Answer: The answer would be =
This is just the same thing
Hope this helps!
Answer:
Step-by-step explanation:
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