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krek1111 [17]
3 years ago
8

Which expression is equivalent to (x +9i)2?

Mathematics
1 answer:
Debora [2.8K]3 years ago
6 0
B x^2+18xi-81 hope this helps
You might be interested in
Sociologists say that 85% of married women claim that their husband's mother is the biggest bone of contention in their marriage
hoa [83]

Answer:

(A) 0.377,

(B) 0.000,

(C) 0.953,

(D) 0.047

Step-by-step explanation:

We assume that having a bone of intention means not liking one's Mother-in-Law

(A) P(all six dislike their Mother-in-Law) = (85%)^6 = (.85)^6 = 0.377

(B) P(none of the six dislike their Mother-in-Law) =

(100% - 85%)^6 =

0.15^6 =

0.000

(C) P(at least 4 dislike their Mother-in-Law) =

P(exactly 4 dislike their Mother-in-Law) + P(exactly 5 dislike their Mother-in-Law) + P(exactly 6 dislike their Mother-in-Law) =

C(6,4) * (.85)^4 * (1-.85)^2 + C(6,5) * (.85)^5 * (.15)^1 + C(6,6) * (.85)^6 = (15) * (.85)^4 * (.15)^2 + (6) * (.85)^5 * .15 + (1) * (.85)^6 =

0.953

(D) P(no more than 3 dislike their Mother-in-Law) =

P(exactly 0 dislikes their Mother-in-Law) + P(exactly 1 dislikes her Mother) + P(exactly 2 dislike their Mother-in-Law) + P(exactly 3 dislike their Mother-in-Law) =

C(6,0) * (.85)^0 * (.15)^6 + C(6,1) * (.85)^1 * (.15)^5 + C(6,2) * (.85)^2 * (.15)^4 + C(6,3) * (.85)^3 * (.15)^3 =

(1)(1)(.15)^6 + (6)(.85)(.15)^5 + (15)(.85)^2 *(.15)^4 + (20)(.85)^3 * (.15)^3 =

0.047

3 0
3 years ago
What is 76.32 plus 99.86<br>Divide the answer by 3?​
ANEK [815]

58.7266666667

That would be the answer. Hope this helps!

8 0
3 years ago
34.989 to the nearest tenth
swat32
35.0: the answer to the question
4 0
4 years ago
I really need help anybody
Brut [27]
- 4(8x-3)/4 =76/4

-8x+3=76/4

-8x+3=19

-8x=16

X=2

I hope this helps.
7 0
4 years ago
precipitation for the month of march was 2 3/4 inches less than average. in april the precipiitation was 3 7/8 inches less tha a
SVEN [57.7K]

Answer:6 5/8

Step-by-step explanation:

If we know that both are below average we can add them together to get the below average awnser for the 2 months.

5 0
3 years ago
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