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nasty-shy [4]
2 years ago
7

Which statement about stratified random sampling is true?

Mathematics
1 answer:
dem82 [27]2 years ago
4 0

<u><em>Answer: A stratified random sample consists of choosing several strata, and each stratum is representative of the entire population.</em></u>

<u><em /></u>

<u><em>Step-by-step explanation: well i knew this answer by studying in my math class</em></u>

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Need help! Write the answer down on a paper plzzzzzzzz I will give brainlyest to person who gets it right!‼️❤️
natima [27]

Answer:

a. yes

b. no

c. yes

d. yes

e. yes

f. yes

g. no

h. no

7 0
3 years ago
Write an equation of a line that is perpendicular to the line 2x-3y+15=0
loris [4]

Answer:

y =- \frac{3}{2} x+1

Step-by-step explanation:

The equation of the given straight line is 2x - 3y + 15 = 0.

Now, we can express the equation as 3y = 2x + 15

⇒ y = \frac{2}{3} x+ 5 ..........(1)

The equation is in slope-intercept form and the slope is =\frac{2}{3}

Therefore, the equation of a straight line which is perpendicular to (1) is  

y = -\frac{3}{2} x+c {Where c is any constant}

{Since, the product of slopes of two perpendicular straight lines is -1}

Now, putting c = 1, we get the equation as y =- \frac{3}{2} x+1. (Answer)

4 0
3 years ago
The library has thirteen
dybincka [34]

Answer:

If the shelves  are 4/5 full, then the total number of books in the library is 1,040 books

Step-by-step explanation:

13 roll of bookcases

All the bookcases have four shelves

Total number of shelves = 4 x 13

                                        = 52 shelves

Each shelve holds 25 books each

Total number of books that can be in the shelves altogether = 52 x 25

                                                                                                    = 1,300 books

If the shelves  are 4/5 full, then the total number of books in the library is,

 4/5 x 1300

= 1,040 books

5 0
3 years ago
The product of 11/13 and 4 is:
kirza4 [7]

Answer:

11/13 x 4 = 3 5/13

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Factor completely.<br> 4x^3 + 12x^2 + 3x + 9
Sergio039 [100]

Answer:

(4x^2 + 3)(x + 3)

Step-by-step explanation:

Split the equation in the middle so you can factor it out:

4x^3 + 12x^2   |   + 3x + 9

Then factor out:

4x^2(x + 3)   |   3(x + 3)

Congrats, you completed your equation:

(4x^2 + 3)(x + 3)

5 0
3 years ago
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