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natulia [17]
3 years ago
6

Find the third term of the geometric sequence when a1=1/4 and r=−2

Mathematics
1 answer:
Jobisdone [24]3 years ago
7 0

Answer:

1 is the third term.

Step-by-step explanation:

Geometric sequences have a common ratio.  This means a term divided by previous term is the same no matter the choosing of term.

So for example:

\frac{a_{n}}{a_{n-1}}=\frac{a_{n-1}}{a_{n-2}}=\cdots=\frac{a_4}{a_3}=\frac{a_3}{a_2}=\frac{a_2}{a_1}

So anyways geometric sequences means you are just multiply the common ratio over and over to generate the next term.

So, the first term is 1/4.

The second term is (-2)(1/4)=-1/2.

The third term is (-2)(-1/2)=1.

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Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. Your dat
Free_Kalibri [48]

Answer:

Probability of the day to be a snow day is 0.34

Step-by-step explanation:

We have the data,

Out of 21 which had less than 3 inches of snow, 5 were snow days.

Out of 8 days which had more than 3 inches of snow, 6 were snow days.

So, we get,

Total number of days = 21 + 8 = 29

Total number of snow days = 5 + 6 = 11

Thus, the probability that the day will be a snow day is \frac{11}{29} i.e. 0.34

Hence, the probability of the day to be a snow day is 0.34.

5 0
2 years ago
Find the value of x. Please help!!!!
Murrr4er [49]

Answer:

9°

Step-by-step explanation:

In a ∆, equal sides make equal angle to the third side. So the angle that's not mentioned is same '2'.

Sum of angles in a ∆ = 180°

80° + m/_2 + m/_2 = 180°

80° + (5x + 5) + (5x + 5) = 180°

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x = 9°

6 0
3 years ago
Please HELP!! It’s due today
Aleks04 [339]

Answer:

For C all she has to do is look at the chart-

0=0

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4 0
3 years ago
What is -2n - 24 = -8(2n-4) , and how do I do it? Thanks in advance.
myrzilka [38]
-2n-24=-8(2n-4)
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2n+24=8(2n-4)
Distribute the right side
2n+24=16n-32
Subtract 2n from both sides
24=14n-32
Add 32 to both sides
56=14n
Divide 14 from both sides
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7 0
3 years ago
Read 2 more answers
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My name is Ann [436]

Answer:D

Step-by-step explanation:

students playing trombone=12+10+7+16

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8 0
3 years ago
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