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2 years ago

What is the mean for the following set of data? 2,5, 7, 8, 11, 11, 12 10 11 8

Mathematics

2 answers:

jekas [21]2 years ago

7 0

Answer:

Add up all the numbers & divide by the number of numbers. That should give you the mean.

Step-by-step explanation:

Yuri [45]2 years ago

4 0

Add up all the numbers & divide by the number of numbers. That should give you the mean.

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Find the volume of the figure shown below.

Alex777 [14]

10 cm would stay as a 10 cm
14cm would round down to a 10

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2 years ago

Simplify 4( x - 6) ^2 / ( x - 6)

Leno4ka [110]

Answer:

4x - 24

Step-by-step explanation:

$\frac{4(x - 6 {)}^{2} }{(x - 6)}$

$4(x - 6) = 4x - 4 \times 6 = 4x - 24$

$4x - 24$

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2 years ago

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The graphs below have the same shape. What is the equation of the blue

lbvjy [14]

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2 years ago

An elevator is on the twentieth floor. It goes down 11 floors and then up 5 floors. What floor is the elevator on now?

kolbaska11 [484]

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Step-by-step explanation:

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3 years ago

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What is the sum of the first 37 terms of the arithmetic sequence?

lidiya [134]

Answer:

The sum of the first 37 terms of the arithmetic sequence is 2997.

Step-by-step explanation:

Arithmetic sequence concepts:

The general rule of an arithmetic sequence is the following:

$a_{n+1} = a_{n} + d$

In which d is the common diference between each term.

We can expand the general equation to find the nth term from the first, by the following equation:

$a_{n} = a_{1} + (n-1)*d$

The sum of the first n terms of an arithmetic sequence is given by:

$S_{n} = \frac{n(a_{1} + a_{n})}{2}$

In this question:

$a_{1} = -27, d = -21 - (-27) = -15 - (-21) = ... = 6$

We want the sum of the first 37 terms, so we have to find $a_{37}$

$a_{n} = a_{1} + (n-1)*d$

$a_{37} = a_{1} + (36)*d$

$a_{37} = -27 + 36*6$

$a_{37} = 189$

Then

$S_{37} = \frac{37(-27 + 189)}{2} = 2997$

The sum of the first 37 terms of the arithmetic sequence is 2997.

6 0

2 years ago