Area of regular polygons

Mathematics

1 answer:

Leno4ka [110]2 years ago

8 0

Answer = 259.2. (I have linked my working out down below have a look)

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HELP! Need quick - Determine whether the data distribution appears to be positively skewed, negatively skewed, or symmetric.

zalisa [80]

Answer:

A. negatively skewed

Step-by-step explanation:

Plot the values of salary against years

You will notice that;

The graph has a long left tail
The tail is longer towards the negative direction of the number line

This mean that this graph is a negative skewed graph/left-skewed distribution

In the <u>attached sketch of the plot</u>, join the points with a smooth curve and observe the above mentioned properties.

The x-axis scale ranges from 2000 to 2015 where 0=2000, 1=2001,2=2002......,15=2015

Hope this will give you a visual picture of the negatively- skewed distribution

8 0

3 years ago

What is the gcf of 17,15,21

olasank [31]

I think its 21,
Hope this helps

4 0

3 years ago

If cos Θ = square root 2 over 2 and 3 pi over 2 < Θ < 2π, what are the values of sin Θ and tan Θ? sin Θ = square root 2 ov

densk [106]

Answer:

$\huge\boxed{\sin\theta=-\dfrac{\sqrt2}{2};\ \tan\theta=-1}$

Step-by-step explanation:

We have:

$\\cos\theta=\dfrac{\sqrt2}{2},\ \dfrac{3\pi}{2}$

For sine use:

$\sin^2x+\cos^2x=1\to\sin^2x=1-\cos^2x$

Substitute:

$\sin^2\theta=1-\left(\dfrac{\sqrt2}{2}\right)^2\\\\\sin^2\theta=1-\dfrac{(\sqrt2)^2}{2^2}\\\\\sin^2\theta=1-\dfrac{2}{4}\\\\\sin^2\theta=\dfrac{4}{4}-\dfrac{2}{4}\\\\\sin^2\theta=\dfrac{4-2}{4}\\\\\sin^2\theta=\dfrac{2}{4}\to\sin\theta=\pm\sqrt{\dfrac{2}{4}}\\\\\sin\theta=\pm\dfrac{\sqrt2}{\sqrt4}\\\\\sin\theta=\pm\dfrac{\sqrt2}{2}$