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tamaranim1 [39]
2 years ago
15

How many pennies are on the nth square?

Mathematics
2 answers:
denis-greek [22]2 years ago
8 0

Answer: 2^n-1

Step-by-step explanation: You did not provide a full answer but I hope this is correct for you.

kondor19780726 [428]2 years ago
4 0

Answer:

2−1

Step-by-step explanation:

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I will mark you as brainlis if you andwer this all.
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Answer: See below

Step-by-step explanation:

27.  -(a-3)

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Sorry - I don't have time to enter the details.  Look for areas where the expressions can be factored in a manner that forms as many equivalent expressions in both the numerator and denominator.

For example:  In problem 30:

(5d-20)/(d^2+d-20) * [??]/20d = 1/4

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The (d-4), d+5, and d terms cancel, leaving

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7 0
2 years ago
Let's Create
Cerrena [4.2K]

Answer:

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luda_lava [24]

Answer:

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I hope this helps and is correct!

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