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frez [133]
3 years ago
13

assume that the variable under consideration has a density curve. it is given that 27.1% of all possible observations of the var

iable are less than 17. Determine the area under the density curve that lies to the right of 17.​
Mathematics
1 answer:
Nat2105 [25]3 years ago
6 0

Answer:

72.9%

Step-by-step explanation:

Given that :

27.1% of all possible observation of a certain variable are less than 17 ;

That is ;

Let variable = y ;

Proportion of (y < 17) = 27.1% = (27.1 / 100) = 0.271

Proportion that lies to the right :

P(y > 17) = 1 - P(y < 17)

P(y > 17) = 1 - 0.271

P(y > 17) = 0.729 = 72.9%

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4.8a - 6.3b - 2.1a + 7b
ololo11 [35]
First, you combine like terms. I would start by circling the term and the sign in front of it. (A term is a piece separated by an addition/subtraction sign.) You can only combine terms with the same variable. 4.8a-2.1a-6.3b+7b is the same as your equation, just rearranged. Then, subtract (4.8a-2.1a) which is 2.7a. Add (-6.3b to 7b) The answer is 0.7b. If you have any questions, you can message me!
5 0
3 years ago
Read 2 more answers
Blaire needs more than 708 total points on assignments in her math class to pass. She only has 236 points and needs to do some e
blsea [12.9K]

Answer: D) x = 8


Step-by-step explanation: In order to get this answer, you need to keep the 236 and add 59 evry time until you get 708.

Another thing is to multiply 59 by 8, which will give you 472. Now we add 472 and 236 and we get 708.

59 x 8 = 472 + 236 = 708.

56 + 56 + 56 + 56 + 56 + 56 + 56 + 56 = 472 + 236 = 708.

Hope this helped!

Plz mark brainliest!

6 0
3 years ago
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Numbered disks are placed in a box and one disk is selected at random. If there are 4 red discs numbered 1 through 4, and 2 yell
Yuliya22 [10]

Answer:

0.66 = 66%

Step-by-step explanation:

If we know that a odd-numbered disk is selected, we know that the number is 1, 3 or 5.

So, if it is a red disk, is can be number 1 or 3, so we have two possibilities.

If it is a yellow disk, it needs to be number 5, so we have just one possibility.

We have a total of 3 possibilities, and 2 of them are with red disks, so the probability is 2/3 = 0.66 = 66%

3 0
3 years ago
Find the volume of each figure
pshichka [43]

Answer:

See explanation

Step-by-step explanation:

1. The first figure shows triangular prism. The volume of the triangular prism is

V=\text{Base area}\times \text{Height}

The base of this triangular prism is the triangle with the base of 7 cm and height of h cm (it is not seen).

The base area is

\text{Base area}=\dfrac{1}{2}\times \text{Base}\times \text{Height}=\dfrac{1}{2}\times 7\times h=\dfrac{7h}{2}\ cm^2

and the volume of the prism is

V=\dfrac{7h}{2}\times 13=\dfrac{91h}{2}\ cm^3

Just substitute the length of the height and calculate the volume.

2. The second figure shows square pyramid. The volume of the square pyramid is

V=\dfrac{1}{3}\times \text{Base area}\times \text{Height}

The base of this square pyramid is the square with the side length of 4 yd.

The base area is

\text{Base area}= \text{Side Lenght}^2=4^2 =16\ yd^2

and the volume of the pyramid is

V=\dfrac{1}{3}\times 16\times 12=64\ yd^3

7 0
3 years ago
If 55% of the students in a school are boys and number of girls is 900. Find the number of boys.
Reil [10]

Answer: 1100 boys


Step-by-step explanation:


45% students are girls

45% girls in number = 900

1% be = 900x45= 20

55% students are boys

55% boys in number= 55x20= 1100 boys

7 0
3 years ago
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