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TiliK225 [7]
2 years ago
12

If x^2=-1, What is the value of x?

Mathematics
1 answer:
vodomira [7]2 years ago
7 0

Answer:

-1

Step-by-step explanation:

-1^2 = -1

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WILL BE GIVING BRAINLIEST TO RIGHT ANSWERS!!!!!!
ipn [44]

Answer:

1) they will finish 11/30 of the homework in an hour

2) 1/6x + 1/5x = 1

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8 0
3 years ago
Suppose that in a large metropolitan area, 84% of all households have cable tv. Suppose you are interested in selecting a group
Firdavs [7]

Answer:

0.05606

Step-by-step explanation:

This is a binomial probability distribution problem.

84% of all households have cable TV, thus;

p = 0.84

There are six households from this area, thus; n = 6

Formula for this binomial distribution is;

P(X) = C(n, x) × p^(x) × (1 - p)^(n - x)

We want to find the proportion of groups where at most three of the households have cable TV.

Thus, it's is;

P(X ≤ 3) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)

P(X = 0) = C(6, 0) × 0.84^(0) × (1 - 0.84)^(6 - 0) = 0.00001678

P(X = 1) = C(6, 1) × 0.84^(1) × (1 - 0.84)^(6 - 1) = 0.000528

P(X = 2) = C(6, 2) × 0.84^(2) × (1 - 0.84)^(6 - 2) = 0.006963

P(X = 3) = C(6, 3) × 0.84^(3) × (1 - 0.84)^(6 - 3) = 0.04855

Thus;

P(X ≤ 3) = 0.00001678 + 0.000528 + 0.006963 + 0.04855 = 0.05606

5 0
3 years ago
Please help on this math question!!!
Andre45 [30]
I think it’s gonna be 6 adults for every 42 students not really sure so sorry if I got it wrong
6 0
1 year ago
What is y in the equation 14-6y=44
Ostrovityanka [42]
14-6y=44
-14 Both sides
-6y=30
÷-6 both sides
Y=-5
8 0
2 years ago
Read 2 more answers
In collin county there are approximately 834,000 people. If about 30,000 are under the age of 25 what fractional part are above
tresset_1 [31]
Do 30000 divided by 834000 times .1
3 0
3 years ago
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