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neonofarm [45]
3 years ago
5

If the 5th term in a geometric sequence is 162, and the common ratio is 3. What is the first term in the sequence?

Mathematics
1 answer:
Lana71 [14]3 years ago
3 0

Answer:

2

Step-by-step explanation:

a2 = a1×3

a3 = a2×3 = a1×3×3

=>

an = an-1 × 3 =

a1 \times  {3}^{n - 1}

a5 = 162 = a1×3⁴ = a1×81

a1 = 162/81 = 2

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Multiply 16*3 to get 48, the bike is 48 units so 16:1,16/1=16. So the answer would be 16. Hope I helped! 
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One out of every five students in this class has an A. What percent of the students have an A?​
RSB [31]
20% have an A because 1/5 of 100 is 20
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I need help on this question 5(x - 4) = 12
Wewaii [24]
<h2><u>Answer:</u></h2><h2><u />\boxed{\frac{32}{5},~ 6\frac{2}{5} ~, 6.4}<u /></h2><h2><u /></h2><h2><u>Solution Steps: </u></h2><h3>- Steps for solving linear equations - </h3>

______________________________

<h2><u> </u></h2><h3>1.) <u>Divide both sides by 5: </u></h3>
  • 5 ÷ 5= Cancels out
  • <u />12 ÷ 5= \frac{12}{5}

<em>  - I changed  </em>\frac{12}{5}<em> to a fraction instead, and you'll see why on the next step. </em>

<h2><em><u /></em></h2><h3>2.) <u>Add 4 to both sides:</u></h3>
  • -4+4= Cancels out
  • 4=\frac{20}{5}

<em>  - 4 in fraction form would best be </em>\frac{20}{5}<em> in this situation. </em>

<h2><em><u /></em></h2><h3>3.) <u>Add: </u></h3>
  • \frac{12}{5} + \frac{20}{5} = \frac{32}{5}

<em> - Since </em>\frac{12}{5}<em> and </em>\frac{20}{5}<em> have the same denominator, all you have to do is add the numerators. </em>

<h2><u /></h2><h3>4.) <u>Simplify:</u></h3>
  • Improper fraction form: \frac{32}{5}
  • Mixed number form: 6\frac{2}{5}
  • Decimal form: 6.4
<h2><u /></h2>

______________________________

8 0
3 years ago
Can someone help please
m_a_m_a [10]

Answer:

2 good scoops

Step-by-step explanation:

I got you I think

3 0
2 years ago
The average number of points a basketball team scored for three games was 63 points. In the first two games they scored the same
Diano4ka-milaya [45]

Answer:

First Game: 65 points

Second Game : 65 points

Third Game : 59 points

Step-by-step explanation:

Average = sum of values/number of values

The number of values = 3, an d average = 63

63 = x/3

63 * 3 = x

189 = x

Now 189 is the sum of points over two games.

Their first two games are worth the same, so lets call that s +s = 2s

Their 3rd game is worth 6 less points than s, so s-6

let's add up all the terms:

2s + (s - 6) = 3s - 6

Solve:

3s - 6 = 189

3s = 195

s = 65

The first two games are worth 65, and the third game is worth 65 - 6 = 59.

-Chetan K

6 0
2 years ago
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