I think it's A. Please help

Mathematics

1 answer:

brilliants [131]3 years ago

3 0

Your answer is the exponential function (the green line)

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I need the answer for these. 1a: 1b: 1c:

Fantom [35]

1a) 8 / (1/2) = 16 * 3 = 48

1b) 3sqrt(49) = 3 * 7 = 21

1c) (5+2)(-8) / (-2)^3 -3

(7*-8) / (-8 -3)

-56/-11

56/11

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3 years ago

2+2=4 the wat does 50*1 equal

Rudiy27

Answer:

Step-by-step explanation:

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If 5x-3y=12 and 4x-5y=17 what is the value of y?

il63 [147K]

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Evaluate each finite series for the specified number of terms. 1+2+4+...;n=5

zaharov [31]

Answer:

Step-by-step explanation:

The series are given as geometric series because these terms have common ratio and not common difference.

Our common ratio is 2 because:

1*2 = 2

2*2 = 4

The summation formula for geometric series (r ≠ 1) is:

$\displaystyle \large{S_n=\frac{a_1(r^n-1)}{r-1}}$ or $\displaystyle \large{S_n=\frac{a_1(1-r^n)}{1-r}}$

You may use either one of these formulas but I’ll use the first formula.

We are also given that n = 5, meaning we are adding up 5 terms in the series, substitute n = 5 in along with r = 2 and first term = 1.

$\displaystyle \large{S_5=\frac{1(2^5-1)}{2-1}}\\\displaystyle \large{S_5=\frac{2^5-1}{1}}\\\displaystyle \large{S_5=2^5-1}\\\displaystyle \large{S_5=32-1}\\\displaystyle \large{S_5=31}$

Therefore, the solution is 31.

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Summary

If the sequence has common ratio then the sequence or series is classified as geometric sequence/series.

Common Ratio can be found by either multiplying terms with common ratio to get the exact next sequence which can be expressed as $\displaystyle \large{a_{n-1} \cdot r = a_n}$ meaning “previous term times ratio = next term” or you can also get the next term to divide with previous term which can be expressed as: