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3 years ago

Solve the equation 23(9+x)=−5(4−x).

Mathematics

1 answer:

NemiM [27]3 years ago

7 0

Answer:

x= $-\frac{277}{18}$

Step-by-step explanation:

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Please solve this and only answer with image

horsena [70]

$\cot^4 A - \cot^2 A = 1\\\\\cot^4 A = 1 + \cot^2 A\\\\\frac{\cos^4 A}{\sin^4 A} = 1 + \frac{\cos^2 A}{\sin^2 A}\\\\\frac{\cos^4 A}{\sin^4 A} = \frac{\sin^2 A}{\sin^2 A}+\frac{\cos^2 A}{\sin^2 A}\\\\\frac{\cos^4 A}{\sin^4 A} = \frac{\sin^2 A+\cos^2 A}{\sin^2 A}\\\\\frac{\cos^4 A}{\sin^4 A} = \frac{1}{\sin^2 A}\\\\\cos^4 A = \frac{\sin^4 A}{\sin^2 A}\\\\\cos^4 A = \sin^2 A\\\\$

This then means,

$\cos^4 A + \cos^2 A = 1\\\\\sin^2 A + \cos^2 A = 1\\\\$

which is the pythagorean trig identity. This concludes the proof.

Therefore, if $\cot^4 A - \cot^2 A = 1$ , then $\cos^4 A + \cos^2 A = 1$

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3 years ago

To determine the number of seconds in x years. What calculations could you use (assume leap year(s) are not a factor)?

Dennis_Churaev [7]

Answer: 31536000X

Step-by-step explanation:

For one year: 365×24×60×60=31536000 seconds.

For x years will be: X×365×24×60×60=31536000X seconds.

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4 years ago

Explain on how to do it for brainlist please

Ksivusya [100]

To do brainiest you have to have two answers and you can mark brainiest there should be Two blue crowns and once you pick that crown should become gold when you pick

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3 years ago

Find the smallest 0 of f(x+5). X=?

d1i1m1o1n [39]

Two hundred and ninety hope i helped

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4 years ago

You have 5 bikes. Altogether it costs 789$ how much does each bike cost?

algol [13]

Answer:

$157.80

Step-by-step explanation:

$789 / 5 bikes

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3 years ago

Read 2 more answers