2 years ago

Which of the following numbers are composite 47 or 12 or 16 or 43 which number is it

Mathematics

1 answer:

solniwko [45]2 years ago

5 0

Answer:

1=1

Step-by-step explanation:

yes

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otez555 [7]

<u>Step-by-step explanation:</u>

To prove:

$\cos 3x=\cos^3x-3\sin^2 x\cos x$

Identities used:

$\cos(A+B)=\cos A\cos B+\sin A\sin B$ ......(1)

$\sin 2A=2\sin A\cos A$ ........(2)

$\cos 2A=\cos^2A-\sin^2 A$ .......(3)

Taking the LHS:

$\Rightarrow \cos 3x=\cos (x+2x)$

Using identity 1:

$\Rightarrow \cos (x+2x)=\cos x\cos 2x-\sin x\sin 2x$

Using identities 2 and 3:

$\Rightarrow \cos x(\cos ^2x-\sin^2 x)-\sin x(2\sin x\cos x)\\\\\Rightarrow \cos^3x-\sin^2x\cos x-2\sin^2 x\cos x\\\\\Rightarrow \cos^3x-3\sin^2x\cos x$

As, LHS = RHS

Hence proved

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2 years ago

Write an equation of the line that passes through (8,1) and is perpendicular to the line 2y+4x=12.

Olegator [25]

Answer:

Step-by-step explanation:

note:when you do perpendicular lines you must change the slope to the oppisite and reciporcal

2y+4x=12

2y-1/4x=12

1/4x+2y=12

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2 years ago

Im having to write this problem as a equation then solvethe sum of 4xs a number and 9 is equal to3xs the number,im having to wri

natita [175]

Answer:

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Step-by-step explanation:

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2 years ago

When you multiply 3 1/4 by a number greater than one how does the product compared to 3 1/4

vivado [14]

When you multiply 3 1/4 by a number greater than one, you will get the answer greater than 3 1/4.

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2 years ago

The entire world's population could fit inside Los Angeles

7nadin3 [17]

Answer:

Nah, I don't think so. But if that real, then woah

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2 years ago

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