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Amiraneli [1.4K]

3 years ago

5

Find the missing numbers. Thats it :)

1 answer:

Ugo [173]3 years ago

6 0

This is what you do:

25% of the number is 210

So you know that 100% of the number is 840

Then, you can just multiply to find the rest.

42% = 352.8

33% = 277.2

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If A+B= 45° then prove that: tanA+ tanB+ tanA. tanB

Iteru [2.4K]

Answer:

See Explanation

Step-by-step explanation:

$A+B= 45 \degree \\ \\ assuming \: \tan \: on \: both \: sides \\ \\\implies \: \tan( A+B)= \tan 45 \degree \\ \\ \implies \: \tan( A+B)= 1 \: \: \\ ( \because \: \tan 45 \degree = 1) \\ \\ \implies \: \frac{\tan \: A +\tan \: B }{1 - \tan \: A .\tan \: B } = 1 \\ \\ \implies \: \tan \: A +\tan \: B = 1 - \tan \: A .\tan \: B \\ \\ \purple{ \implies }\: \orange{ \bold{\tan \: A +\tan \: B + \tan \: A .\tan \: B= 1 }} \\ \\ thus \: proved$

8 0

3 years ago

What should the graph of two lines look like when there are no solutions that they have in common?

nataly862011 [7]

If the graphs of the equations do not intersect

4 0

2 years ago

Read 2 more answers

45 multiplied by 50 equals what

jonny [76]

The answer to your question is 2250

6 0

3 years ago

Read 2 more answers

Can someone help me with this

Iteru [2.4K]

To solve this, set up a proportion. 72/21.6=110/x Cross multiply. 72x=2376. Solve x=33

6 0

3 years ago

If 3x−y=12, what is the value of <br> 8x<br> 2y<br> ?

anygoal [31]

If 3x-y=12, what is the value of 8x/2y?

Answer:

$\frac{8x}{2y} =\frac{4x}{3x-12}$

Step-by-step explanation:

$3x-y=12$

$-y=12-3x$

$y=3x-12$ -------------------------(equation 1)

Now,

$\frac{8x}{2y} =\frac{8x}{2(3x-12)}$ ---------(from equation 1)

$=\frac{8x}{6x-24}$

$=\frac{8x}{2(3x-12)}$

$=\frac{4x}{3x-12}$

Therefore, the value of $\frac{8x}{2y} =\frac{4x}{3x-12}$

3 0

3 years ago