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Strike441 [17]
2 years ago
12

Fine the sum of the first 8 terms of the arithmetic series 2+7+12+...

Mathematics
1 answer:
ss7ja [257]2 years ago
4 0

Answer:

156

Step-by-step explanation:

s8 = n/2 [2t + (n-1)(d)]

= 8/2 [2(2) + (8-1)(5)]

= 4 [4 + (7)(5)]

= 4 (4 + 35)

= 4 (39)

= 156

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What is the median of the data set?
cluponka [151]

Answer: 85.5

Step-by-step explanation:

There are 22 data points in the data set.

We can find the median by looking at the 11th and 12th scores, and averaging them.

The 11th score is 85

The 12th score is 86

The average of the two is 85.5

Hence the answer is 85.5

3 0
3 years ago
a box contains 4 yellow, 5 green and 3 blue balls. find the probability of obtaining a yellow ball in a single random draw.
Alex

Notice that the box has a total os 4 + 5 + 3 = 12 balls, since there are 4 that are yellow, then, the probability to randomly obtaining a yellow ball in a single draw is:

P(Yellow)=\frac{\text{ number of yellow balls}}{\text{total number of balls}}=\frac{4}{12}=0.33

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7 0
1 year ago
TO BE ANSERED ASAP<br> If n = 4, then 9ˆ8 ÷ 9 n is equal to__________________.
natita [175]

Answer:

1,195,742.25 (final answer since instructions did not include rounding up or anything)

Step-by-step explanation:

n = 4

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USE PEMDAS order of operations and solve:

9^8 ÷ 9n

= 43046721 ÷ 9n

Substitue n with 4 and solve:

43046721 ÷ 9(4)

= 43046721 ÷ 36

= 1,195,742.25

8 0
3 years ago
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ANEK [815]

Answer:

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Step-by-step explanation:

Combine like terms.


This answer is correct.

Hope this helps!


~Courtney

4 0
3 years ago
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Can someone help me with my math<br> −36+x&lt;8
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Answer:

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Step-by-step explanation:


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3 years ago
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