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fgiga [73]
3 years ago
7

An examination consisting of ten true-or-false questions was taken by a class of 100 students. The probability distribution of t

he random variable X, where X denotes the number of questions answered correctly by a randomly chosen student, is represented by the accompanying histogram. The rectangle with base centered on the number 8 is missing. What should be the height of this rectangle?

Mathematics
1 answer:
Grace [21]3 years ago
4 0

Answer:

The height of this rectangle is 8/10

Step-by-step explanation:

Please see attachment .

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You pay $2.40 for 3/4 pound of grapes your friend buys a pound of grapes at the same time and estimates that he will pay $1.80 w
LenKa [72]

I would say your friends assumption is wrong. Why?


Because, if you payed $2.40 for 3/4 pounds of grapes, your friend should pay more for an entire pound, not less.


Hope this helped! c:

8 0
3 years ago
A coin is tossed 17 times. in how many outcomes do exactly 6 heads occur?
masya89 [10]
1 out of 2 outcomes ! i hope i helped !
8 0
3 years ago
Need help with 13 asap
Whitepunk [10]
I’m hoping you are talking about:
Factor -1/2 out of -1/2x + 6
If so then the answer is
-1/2(x-3)
4 0
3 years ago
Dexter has 83 tiles left over from tiling his bathroom floor and he would like to use them to tile the front entrance of his hou
creativ13 [48]

Answer: [0, 396]

Step-by-step explanation:

The domain is the acceptable values of x in the function.  In this case, x = t, the number of tiles.  If you think about it, the minimum number of tiles is 0 (you can't have a negative number of tiles), and the maximum number of tiles is 44 (you only have 44 tiles).  So, the domain for this function is from 0 to 44.

0 to 44 written in interval notation is [0,44].

The range is the acceptable values of y in the function.  In this case, y = A, the area given.  A(t) = 9t, so you can use the acceptable values of t to get the range.  Again, the minimum area is 0 because you can't have negative area. To find the maximum area, plug in the maximum number of tiles: 9.

A(t) = 9t

A = 9(44)

A = 396

With the maximum number of tiles, 44, the area you get is 396 cm².  Therefore, the acceptable values of A are from 0 to 396.

0 to 396 written in interval notation is [0, 396].

4 0
3 years ago
A​ 12-sided die is rolled. The set of equally likely outcomes is {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} . Find the probability
Free_Kalibri [48]

Answer:

11/12

Step-by-step explanation:

Greater than 1: 2,3.... 12

P(greater than 1) = 11/12

7 0
3 years ago
Read 2 more answers
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