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ANTONII [103]
2 years ago
6

-28 Altitude change: 1 -287 feet in 3 37 seconds

Mathematics
1 answer:
Ann [662]2 years ago
3 0

Answer:

?

Step-by-step explanation:

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Professor Halen has 184 students in his college mathematics lecture class. The scores on the midterm exam are normally distribut
AURORKA [14]

Answer: 21

Step-by-step explanation:

Given : The scores on the midterm exam are normally distributed with

\mu=72.3\\\\\sigma=8.9

Let X be random variable that represents the score of the students.

z-score: z=\dfrac{x-\mu}{\sigma}

For x=82

z=\dfrac{82-72.3}{8.9}\approx1.09

For x=90

z=\dfrac{90-72.3}{8.9}\approx1.99

Now, the probability of the students in the class receive a score between 82 and 90 ( by using standard normal distribution table ) :-

P(82

Now ,the number of students expected to receive a score between 82 and 90 are :-

184\times0.1146=21.0864\approx21

Hence, 21 students are expected to receive a score between 82 and 90 .

5 0
3 years ago
Which situation would result in a value of O?
torisob [31]

Answer:

None

Step-by-step explanation:

None of these could be correct.

Number 1 is 15 (50-35)

number 2 is 24 (24-24) (0+24)

number 3 is 90.

if anything the best choice would be 2

6 0
3 years ago
Factor<br> 1 out of -x +6<br> The factored expression is
lana [24]

Answer:

6+f=21

Step-by-step explanation:

5 0
3 years ago
Which expression is equal to “seven more than a number multiplied by 9"?
ipn [44]

Answer:

b

Step-by-step explanation:

a: is not because in the distribution property, the answer would be for a, 9x+63.

b: yes.

c: it's subtracting, not adding. The question states adding

d: 7 is not the one being multiplied in the question, 9 is. Therefore b is right

The explaining is not good but im pretty sure it's b..

7 0
2 years ago
Please help need 4 and 5 I will make brainliest , 30 points
trasher [3.6K]

She put 1/5 down which means she owes 4/5

620 * 4/5 = 496

She owes $496.00



98 - 10 = 88

She still owes $88.00

5 0
3 years ago
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