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3 years ago

Problem

Mathematics

1 answer:

Nitella [24]3 years ago

8 0

Answer:maybe 29

Step-by-step explanation:

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Can someone please help with this? the question is in the picture.

polet [3.4K]

Pie is an irrational number for it is 3.14....

7 0

4 years ago

Read 2 more answers

True or false. Tan^2 x = 1 - cos2x/ 1 + cos 2x

koban [17]

<u>ANSWER</u>

True

<u>EXPLANATION</u>

The given trigonometric equation is

$\tan^{2} (x) = \frac{1 - \cos(2x) }{1 + \cos(2x) }$

Recall the double angle identity:

$\cos(2x) = \cos^{2} x - \sin^{2}x$

We apply this identity to obtain:

$\tan^{2} (x) = \frac{1 - (\cos^{2} x - \sin^{2}x) }{1 + (\cos^{2} x - \sin^{2}x) }$

We maintain the LHS and simplify the RHS to see whether they are equal.

Expand the parenthesis

$\tan^{2} (x) = \frac{1 - \cos^{2} x + \sin^{2}x }{1 + \cos^{2} x - \sin^{2}x}$

$\implies\tan^{2} (x) = \frac{1 - \cos^{2} x + \sin^{2}x }{1 - \sin^{2}x + \cos^{2} x }$

Recall that:

$1 - \sin^{2}x = \cos^{2}x$

$1 - \cos^{2}x = \sin^{2}x$

We apply these identities to get:

$\implies\tan^{2} (x) = \frac{\sin^{2}x + \sin^{2}x }{\cos^{2} x + \cos^{2} x }$

$\implies\tan^{2} (x) = \frac{2\sin^{2}x }{ 2\cos^{2} x }$

$\implies\tan^{2} (x) = \frac{\sin^{2}x }{ \cos^{2} x }$

$\implies \tan^{2} (x) =( \frac{\sin x }{ \cos x })^{2}$

Also

$\frac{\sin x }{ \cos x } = \tan(x)$

$\implies \tan^{2} (x) =( \tan x )^{2}$

$\implies \tan^{2} (x) =\tan^{2} (x)$

Therefore the correct answer is True

5 0

4 years ago

Once every three years, the Board of Governors of the Federal Reserve System collects data on household assets and liabilities t

kvv77 [185]

Answer:

C. The distribution of the value of transaction accounts is a right-skewed distribution.

Step-by-step explanation:

Some definitions

A skewed right distribution is one in which the tail is on the right side. On simple words we have most of the values on the left part of the distribution.

And present the following property:

$Mode< Median< Mean$

A skewed left distribution is one in which the tail is on the left side. On simple words we have most of the values on the left part of the distribution.

And present the following property:

$Mean< Median< Mode$