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patriot [66]
3 years ago
8

What is i^22 if i^2 is -1

Mathematics
1 answer:
Sever21 [200]3 years ago
4 0
I^22 equals to -1 since i^2 is negative one
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A dart is to be thrown at a target. The probability the dart will hit the target (yes or no) on a single attempt is 0.20. Each t
MArishka [77]

Answer:

0.04

Step-by-step explanation:

Given that a dart is to be thrown at a target. The probability the dart will hit the target (yes or no) on a single attempt is 0.20

Each throw is independent of the other throws.

Let x be the no of times the target is hit in the trial of 4 throws

Since each outcome is independent of the other X is binomial with n =4 and p = 0.20

Required probability

=  the probability that it will take less than or equal to 4 throws to hit the target on both successful target hits

=P(X=2 when n =2) + P(x=2 when x =3) + P(x=2 when x =4)

= (0.2)^2 + 3C2 (0.2)^2(0.98)+4C2 (0.2)^2 (0.98^2)\\=0.04

3 0
3 years ago
At a large university, the probability that a student takes calculus and statistics in the same semester is 0.02. The probabilit
Nina [5.8K]

Answer:

The probability that a student is taking calculus given that he or she is taking statistics is = 0.26

Step-by-step explanation:

the probability that a student is taking calculus given that he or she is taking statistics.

Let C = Calculus

S = Statistics

We solve this above Question nursing the formula;

P ( C ∪ S) = P(C) + P ( S ) - P ( C ∩ S)

From the question,

P(C) = 0.10

P( S ) = 0.18

P ( C ∩ S) = 0.02

P ( C ∪ S) = ???

P ( C ∪ S) = 0.10 + 0.18 - 0.02

= 0.28 - 0.02

= 0.26

8 0
4 years ago
Evaluate 4/3(4 1/5 + x) ÷ 5/2y when x = 3/2 and y = 15
MissTica
So what u do (-72828282)+(-7382828)=(-73838)+n=(-839288n)
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3 years ago
The man who put soap in his soup so he could wash _ down with something
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So the man can wash lies Down
5 0
3 years ago
Solve p+3 (show all of the steps) p=7
Anarel [89]

Answer:

10

Step-by-step explanation:

7 + 3 = 10

Not really that much to it lol

3 0
3 years ago
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