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aniked [119]
3 years ago
15

Is a biased sample valid

Mathematics
1 answer:
murzikaleks [220]3 years ago
5 0
No a biased sample is not valid
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PLEASE PLEASE I SUCK AT MATH AND ITS ALL DUE FRIDAY PLEASE 10 piont !!! Select all the correct systems of equations.
alekssr [168]

Answer:

2x + y = 17

-6x = 3y - 51

Step-by-step explanation:

You get an infinite number of solutions when two equations are really just the same. This means you can convert one into the other simply by multiplying one to get the other.

In the above answer, if you multiply the above by -3 you get:

-6x -3y = -51

which is of course -6x = 3y - 51

So that is an example of a pair that has infinite solutions.

To find all of them, you'd carefully have to compare each 2 and see if there is a multiplier to convert one into the other. You can do that!

4 0
3 years ago
Drag steps of the solution into order to solve for x in the equation 7(x – 4) = 84.
Olin [163]
1. 7x - 28 = 84 
2. 7x = 112
3. x = 16
6 0
3 years ago
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-x-2y-4z=-6<br> X-5y-2z=-2<br> 2x-3y+2z=2
Svetlanka [38]

Answer:

\sqrt{2} or (1/2)

Step-by-step explanation:

7 0
3 years ago
Jenna has 131 dog biscuits. She wants to give them as gifts to each of her 4 poodles.
Step2247 [10]

I hope this helps

Answer:

32.75

Step-by-step explanation:

If you divide 131 by 4 (131/4), then you should get the answer 32.75, so if you need to round it, round it to 31, and if you do not need to round it, then it will be 32.75

4 0
3 years ago
Let the positive numbers a, b, c. Prove that <img src="https://tex.z-dn.net/?f=%5Cfrac%7Ba%5E%7B2013%7D%2Bb%5E%7B2013%7D%2Bc%5E%
Serggg [28]

Answer:

I don't need to prove it, I already believe you

7 0
3 years ago
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