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2 years ago

Compute the standard deviation for the set of data. 2, 5, 6, 8, 14

Mathematics

1 answer:

Komok [63]2 years ago

5 0

4.47, if you put it in a calculator, not sure if teacher wants something different.

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I need help pretty please!

Naddika [18.5K]

Answer:

cos(z) = .3846153846 and angle z = 67.38°

Step-by-step explanation:

Side UV is corresponding to side YX. Side VW is corresponding to side YZ. Side UW is corresponding to side XZ.

Starting with the first corresponding pair, we are told that side UV is 36, and that side YX is 3/5 of that. So side YX is

$\frac{3}{5}*36=21.6$

We are next told that side VW is 39, so side YZ is

$\frac{3}{5}*39=23.4$

In order to find the cos of angle z, we need the adjacent side, which is side XZ. Side XZ is 3/5 of side UW. Right now we don't know the length of side UW, so we find it using Pythagorean's Theorem:

$39^2-36^2=UW^2$ and

$UW^2=225$ so

UW = 15

Now we can say that side XZ is

$\frac{3}{5}*15=9$

The cos of an angle is the side adjacent to the angle (9) over the hypotenuse of the triangle (23.4) so our ratio is:

$cos(z)=\frac{9}{23.4}$

which divides to

cos(z) = .3846153846

If you need the value of the angle, use the inverse cosine function on your calculator in degree mode to find that

angle z = 67.38°

3 0

2 years ago

What experimental of rolling a 2 or 3

kondor19780726 [428]

Answer:

Option 1: 0.32

Step-by-step explanation:

Let

P(A) be the experimental probability of getting two

And

P(B) be the experimental probability of getting three

The dice is rolled 360 times.

So the sample space is n(S) = 360

P(A) = n(A)/n(S)

= 54/360

= 0.15

And

P(B) = n(B)/n(S)

= 62/360

= 0.172

As both the events A and B are mutually exclusive,

P(A or B) = P(A) + P(B)

= 0.15 + 0.172

=0.322

Rounding of to one decimal gives us:

0.32

So the probability of rolling a two or three is 0.32 ..

3 0

2 years ago

A common marketing strategy used by retailers to induce multiple copies of a product is to list a $3 item for A:one for $3 B:one

Vitek1552 [10]

The correct answer to your question would be C, to list the the product as 2 for 6$

7 0

2 years ago

Angle relationships worksheet #2 10-17

lbvjy [14]

That does not make any since...

3 0

2 years ago

14. A quadratic equation is graphed above.

IrinaVladis [17]

Answer:

Step-by-step explanation:

2=-2，3=-3

2²=-2²，3²=3²

3 0

2 years ago