For the even number it would be I think a 6/6 chance for the three a 2/6 chance.
Sum = n/2[2a + (n - 1)d] where a = first term, n = number of terms and d = common difference
(a) 30/2(2 x 5 + (30 - 1) x d) = 1455
10 + 29d = 1455 / 15
29d = 97 - 10
d = 87 / 29 = 3
(b) 7/2(2 x 9 + (7 - 1)d) = 0
18 + 6d = 0
6d = -18
d = -3
The complex number is -6-5i. The conjugate means just flip the sign of the imaginary part of the complex number. -6+5i is the answer.
Answer:
Step-by-step explanation:
HTH TTH TH H T U
<u> 10 0 0 0 0 0</u>
<u>1,000,000</u>
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