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frozen [14]
3 years ago
6

PLEASE HELP I NEED HELP!! 25 POINTS

Mathematics
1 answer:
Marysya12 [62]3 years ago
3 0

60x+80=100x combine like terms

80=100x-60x or 40x divide to get x by itself

80/40=40x/40

20=x

after 20 hrs

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Find the explicit formula for the sequence? -1,4,-16,64......
Ede4ka [16]

The explicit formula for given sequence is: a_n = -1 . (-4)^{n-1}

Step-by-step explanation:

Given sequence is:

-1,4,-16,64.....

We can see that there is no same difference between consecutive terms so we will find common ratio to see if it is a geometric sequence.

Here

a_1 = -1\\a_2 = 4\\a_3 = -16\\a_4 = 64\\r = \frac{a_2}{a_1} = \frac{4}{-1} = -4\\r = \frac{a_3}{a_2} = \frac{-16}{4} = -4

The explicit formula for geometric sequence is:

a_n = a_1r^{n-1}

Putting the values of r and a1

a_n = -1 . (-4)^{n-1}

Hence

The explicit formula for given sequence is: a_n = -1 . (-4)^{n-1}

Keywords: Geometric sequence, common ratio

Learn more about geometric sequence at:

  • brainly.com/question/4767370
  • brainly.com/question/4770453

#learnwithBrainly

5 0
4 years ago
3 4/7 - 3/5 as a fraction please help!
ladessa [460]

Answer:

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Step-by-step explanation:

On calculators, anytime we're doing a fraction problem and we use calculators, It doesn't give us the fractions all it gives us is decimals, but i finally got the fraction for you. hope this helped

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7 0
3 years ago
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Which table shows a proportional relationship?
Fittoniya [83]

Answer:

I can't understand this that well could you take a picture of the question

5 0
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4 years ago
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Virty [35]

Answer:

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Step-by-step explanation:

6 + 5 = 11

1/10 + 4/5

1/10 + 8/10 = 9/10

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HOPE THIS HELPS

PLZ MARK BRAINLIEST

5 0
3 years ago
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