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jekas [21]
3 years ago
15

I will never get the hang of these questions help

Mathematics
1 answer:
jeyben [28]3 years ago
4 0
First term is -7, so a_1 = -7

To get the next term, we add on 4. We can see this if we subtract like so
d = (2nd term) - (1st term) = (-3) - (-7) = -3+7 = 4

So d = 4 is the common difference. 

Apply a_1 = -7 and d = 4 to get...
a_n = a_1 + d*(n-1)
a_n = -7 + 4*(n-1)
a_n = -7 + (n-1)*4

Answer: Choice A
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Step-by-step explanation:

A bag contains:

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The probability of randomly selecting a yellow marble out of the bag is \frac{1}{5}

Learn more:

You can learn more about the probability in brainly.com/question/9178881

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