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Ivenika [448]
3 years ago
6

What is the value of 6/x +2c^2, when x= 3? O 8 O 11 O 14 20

Mathematics
1 answer:
yarga [219]3 years ago
3 0

Answer:

the answer is 11

Step-by-step explanation:

dont know

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If you sleep an average of 7.5 hours each night, how many hours do you sleep in a year?
satela [25.4K]

Answer:

\boxed{\sf 2737.5 \ hours}

Step-by-step explanation:

The average is 7.5 hours of sleep each night.

There are 365 nights in 1 year.

\sf Multiply \ the \ value \ by \ 365.

7.5 \times 365

2737.5

5 0
3 years ago
Read 2 more answers
A study was conducted to determine whether there were significant differences between medical students admitted through special
BabaBlast [244]

Answer:

A) 0.7696

B) 0.0474

C) Yes it's unusual

D) 0.05746

E) No, it is not unusual

F) No, it is not unusual

Step-by-step explanation:

This is a binomial probability distribution question.

We are told that 92.4% of those admitted graduated.

Thus; p = 92.4% = 0.924

From binomial probability distribution, q = 1 - p

Thus;

q = 1 - 0.924

q = 0.076

Formula for binomial probability distribution is;

P(x) = nCx × p^(x) × q^(n - x)

A) At least 11 graduated out of 12.

P(x ≥ 11) = P(11) + P(12)

P(11) = 12C11 × 0.924^(11) × 0.076^(12 - 11)

P(11) = 0.3823

P(12) = 12C12 × 0.924^(12) × 0.076^(12 - 12)

P(12) = 0.3873

P(x ≥ 11) = 0.3823 + 0.3873

P(x ≥ 11) = 0.7696

B) that exactly 9 of them graduated out of 12. This is;

P(9) = 12C9 × 0.924^(9) × 0.076^(12 - 9)

P(9) = 0.0474

C) We are not given significance level here but generally when not given we adopt a significance level of α = 0.05.

Now, exactly 9 out of 12 that graduated which is P(9) = 0.0474.

We see that 0.0474 is less than the significance level of 0.05. Thus, we can say that it is unusual to randomly select 12 students from the special programs and get exactly 9 that graduate

D) that at most 9 of them out of 12 graduated.

P(x ≤ 9) = P(0) + P(1) + P(2) + P(3) + P(4) + P(5) + P(6) + P(7) + P(8) + P(9)

This is going to be very long so I will make use of an online probability calculator to get the values of P(0) to P(8) since I already have P(9) as 0.0474.

Thus, we have;

P(0) = 0

P(1) = 0

P(2) = 0

P(3) = 0.00000001468

P(4) = 0.00000040161

P(5) = 0.00000781232

P(6) = 0.00011081163

P(7) = 0.00115477385

P(8) = 0.00877476184

Thus;

P(x ≤ 9) = 0 + 0 + 0 + 0.00000001468 + 0.00000040161 + 0.00000781232 + 0.00011081163 + 0.00115477385 + 0.00877476184 + 0.04741450256

P(x ≤ 9) = 0.05746

E) P(x ≤ 9) = 0.05746 is more than the significance level of 0.05, thus we will say it is not unusual.

F) from online binomial probability calculator, probability of getting only 9 out of 12 is more than the significance value of 0.05. Thus, we will say it is not unusual

7 0
3 years ago
12. Find the values of x and y in the diagram below
Lapatulllka [165]

Answer:

1. y = 18/4

2. x = 11/6

3. y = -14

4. x = -5

Step-by-step explanation:

1. 4y - 18 = 0

4y = 18

y = 18/4

2. 6x - 11 = 0

6x = 11

x = 11/6

3. y + 14 = 0

y = -14

4. x + 5 = 0

x = -5

4 0
3 years ago
How would you right this as an expression: your mother gave u $13.32 with which to buy a present. This covered 3|5 of the cost.
Gnesinka [82]
13.32=3/5x would be the expression.

22.20=x

The present cost $22.20
4 0
3 years ago
PLEASE someone help me with e,f,g,h ​
VMariaS [17]
A B G H because i’m just smart like that and Cause math is important
3 0
3 years ago
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