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Orlov [11]
3 years ago
9

The scores on the verbal section of the Graduate Records Examination (GRE) are approximately normally distributed with a mean of

150 and a standard deviation of 8.5. What is the probability that a randomly selected score on the verbal section is higher than 165?
Mathematics
1 answer:
Mashcka [7]3 years ago
5 0

Answer:

0.039

Step-by-step explanation:

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Which number below best represents a positive charge of 1,861?
scoray [572]
The second one is the only positive besides 4th but the second and first are the only 1861  so ide have to say the second one

5 0
4 years ago
Find the first four positive values of arccos(0.7). I know how to get the first, but as for the rest, I am lost.
Mandarinka [93]
Now cos⁻¹(0.7) is about 45.6°, that's on the first quadrant.

keep in mind that the inverse cosine function has a range of [0, 180°], so any angles it will spit out, will be on either the I quadrant where cosine is positive or the II quadrant, where cosine is negative.

however, 45.6° has a twin, she's at the IV quadrant, where cosine is also positive, and that'd be 360° - 45.6°, or 314.4°.

now, those are the first two, but we have been only working on the [0, 360°] range.... but we can simply go around the circle many times over up to 720° or 72000000000° if we so wish, so let's go just one more time around the circle to find the other fellows.

360° + 45.6° is a full circle and 45.6° more, that will give us the other angle, also in the first quadrant, but after a full cycle, at 405.6°.

then to find her twin on the IV quadrant, we simply keep on going, and that'd be at 360° + 360° - 45.6°, 674.4°.

and you can keep on going around the circle, but only four are needed this time only.
6 0
3 years ago
Thirty adults were asked how many pets they have had over their lifetime.
madam [21]
The statement that is most likely true is that the median is in the 6-10 interval and the mean is in the 6-10

There were a total of 30 different pieces of data collected, so the 15th and 16th pieces of data that would create the median. Both the 15th and 16th numbers would be in the 6 - 10.

If you find the average of the middle data point in each interval the mean would be approximately 7.2. This is in the 2nd interval (6-10).



4 0
3 years ago
Read 2 more answers
If g = 77 cm and h = 85 cm, what is the length of f?
puteri [66]
<span>Your answer is: D. 115 cm</span>
3 0
4 years ago
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THE DIFFERENCE BETWEEN 3/5 OF RAMA'S AGE AND HER AGE BEFORE 4 YEARS IS ZERO. FIND HER AGE AFTER 5 YEARS.
Vinil7 [7]

Answer:

15

Step-by-step explanation:

Let Rama's current age be x.

Rama's Age 4 years ago = x - 4

3/5 of Rama's Age = 3/5 x

Difference = 0

(x - 4) - 3/5 x = 0

2/5 x = 4

x = 10

Rama's Age after 5 years = 10 + 5

= 15

Rama's Age After 5 Years is <u>1</u><u>5</u>

7 0
3 years ago
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