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3 years ago

What is the average score for 98, 111 and 106

1 answer:

6 0

Since giving you the exact answer wouldn't help you learn anything, read this:

to find average get all of the values (98,111,106) and add them up. then do the sum of 98+111+106 divided by total number if values (3)

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7. a hockey arena has 10 920 seats. the first row of seats around the rink has 220 seats. the number of seats in each subsequent

Mazyrski [523]

The number of rows in the arena is 26

<h3>How to determine the number of rows?</h3>

The hockey arena illustrates an arithmetic sequence, and it has the following parameters:

First term, a = 220
Sum of terms, Sn = 10920
Common difference, d = 16

The number of rows (i.e. the number of terms) is calculated using:

$S_n = \frac{n}{2}(2a + (n -1) * d)$

So,we have:

$10920 = \frac{n}{2}(2 * 220 + (n -1) * 16)$

Evaluate the terms and factors

$21840 = n(440 + 16n -16)$

Evaluate the like terms

21840 = n(424+ 16n)

Expand

21840 = 424n + 16n^2

Rewrite as:

16n^2 + 424n - 21840 = 0

Using a graphical tool, we have:

n = 26

Hence, the number of rows in the arena is 26

Read more about arithmetic sequence at:

brainly.com/question/6561461

#SPJ1

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2 years ago

Please answer the questions that are attached will give extra points!

faltersainse [42]

Thank you very much and this “question” was very helpful for me.

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3 years ago

Point A and point B are placed on a number line. Point A is located at - 20 and

Igoryamba

Answer:

Point B is located on -25

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3 years ago

Cindy has 89 coins. If 15% are dimes, how many are not

Bumek [7]

Hi,
to find out the answer you need to divide 89 by 10 than by 5. Add those two answers together which is 23.73. That answer is dimes so 89-23.73=65.27..:) you could round the number up. I hope it helps!!!

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3 years ago

What is the solution to the equation -2(3x-5)<34

Olegator [25]

Divide by -2: 3x-5 < -17
Add 5: 3x < -12
Divide by 3: x < -4 (answer)

7 0

3 years ago