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3 years ago

Solve the equation. simplify your answer. 2x(x-4)-3(x+5)=x(1-x)-16

Mathematics

1 answer:

mylen [45]3 years ago

4 0

Answer:

x=6+√33/3,6−√33/3

Step-by-step explanation:

hope this helps

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By writing sin 3x = sin(2x+x), show that sin 3x = 3 sin x - 4 sin^3 x.

Ksju [112]

Given the trigonometry expression:

sin 3x = sin(2x+x),

In trigonometry identity;

$Sin(A+B) = sinAcosB + cosAsinB$

The expression above will then become;

$sin(2x+x) =sin2xcosx+cos2xsinx\\sin(2x+x) =2sinxcosxcosx + (1-2sin^2x)sinx\\sin(2x+x) =2sinxcos^2x + (1-2sin^2x)sinx\\$

Recall that sin^2x + cos^x = 1, hence;

$sin(2x+x) =2sinx(1-sin^2x)+ (1-2sin^2x)sinx\\Expand\\sin(2x+x) =2sinx-2sin^3x+ sinx-2sin^3x\\sin(2x+x) =2sinx + sinx-2sin^3x-2sin^3x\\sisn(2x+x) = 3sinx-4sin^3x$

This shows that $sin3x =3sinx-4sin^3x$ (Proved!)

Learn more here: brainly.com/question/7331447

8 0

3 years ago

What is the interquartile range of the following data set 2, 5, 9, 11, 18,30, 42, 55, 58, 73, 81

In-s [12.5K]

Answer:

4.2/5. 4.

Step-by-step explanation:

4 0

4 years ago

I’ll fine you brainlist if you answer please answer it’s URGENT

Marat540 [252]

Answer:

6, 0, 10

Step-by-step explanation:

Plug in the values of x into the equation to find the y coordinate. Then match the coordinates in the table to the graph.

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3 years ago

Evaluate the function

vova2212 [387]

-1 you change all the x values to -1 and then solve

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3 years ago

4 terms for this sequence plsss i’ll give brainliest

Alinara [238K]

Answer:

$4n^{2}$ -4n+1

Step-by-step explanation:

hopfully this is what you were looking for

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3 years ago