Answer:
A
Step-by-step explanation:
Since it is upside down, it is the one with the negative sign in front of the x. The numbers will continue to increase in the negatives.
The answer is letter C. Hope I helped.
<h3>
Answer: Independent </h3>
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Reason:
The first marble was replaced, so the original state of the bag hasn't changed overall. The probability isn't changed either. We can treat the second selection entirely independent of the first one.
If the first marble wasn't replaced, then the marble count of course goes down by 1. That affects the probability of the second selection and we'd consider these events to be dependent.
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An example:
Consider a bag with 4 red marbles and 6 green ones. The chances of picking red on the first try are 4/10 = 2/5. The chances of picking red again would be 2/5 assuming we put that red marble back. We can see the second selection is independent of the first.
If the marble wasn't put back, then the chances of picking a 2nd red marble would be 3/9 = 1/3. I subtracted 1 from the numerator and denominator of 4/10 to get to 3/9. In this case, the 2nd selection's probability depends on the first event (whether red was picked or not).
Answer:
7(b^2 -2)(b^2 +2)
Step-by-step explanation:
Factoring the common factor 7 from both terms, you get the difference of squares. That can also be factored.
v = 7(b^4 -4) = 7(b^2 -2)(b^2 +2)
The difference b^2-2 will have irrational factors, so does not meet the problem requirements. This is the factorization over integers.
Hello from MrBillDoesMath!
Answer: Choice b
Discussion:
Look for corresponding parts in each figure. In this case, the we find
10/ 8 is the ratio of the heights
and
425/x is the ratio of the widths
So 10/8 = 425/x which is choice b.
Thank you,
MrB
</h2><h3>○=> <u>Steps to derive correct answer</u> :</h3>