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Hitman42 [59]
3 years ago
14

Sin2x= ____.

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
5 0

\bf \textit{Double Angle Identities} \\\\ \underset{\underset{\textit{notice here}}{\uparrow }}{sin(2\theta)=2sin(\theta)cos(\theta)} ~\hfill cos(2\theta)= \begin{cases} cos^2(\theta)-sin^2(\theta)\\ 1-2sin^2(\theta)\\ 2cos^2(\theta)-1 \end{cases} \\\\\\ tan(2\theta)=\cfrac{2tan(\theta)}{1-tan^2(\theta)}

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Find the sum:<br> The blanks r subtraction signs
Evgen [1.6K]

Answer:

8x^2+6x-17

Step-by-step explanation:

All that we have to do is add the 3 and 5 so it's basically like combining like terms. So the first blank is 8.

Now we add the x and the 5x which is 6x, all we're doing is adding the x's.

Now we do add the two negative 10 and 7. So what is -10 + - 7 we add them normally but we'll still have the negative in front of them. So it's -17.

6 0
3 years ago
What is the answer to the question?​
strojnjashka [21]

Step-by-step explanation:

Since AD bisects BC,

BD = DC.

Therefore 5x - 10 = 3x + 10 and x = 10.

4 0
3 years ago
Read 2 more answers
Simply this plz ո • ո3
anzhelika [568]

Answer:

Answer is n^4

Step-by-step explanation:

You add the exponent when they are multiplying and have the same base

4 0
3 years ago
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I REALLY NEED HELP FAST, will mark you the brainliest if you answer this first :D
VLD [36.1K]

Step-by-step explanation:

required \: scale  \\ =  \frac{12 \frac{1}{2} }{1 \frac{9}{16} }  \\  \\  =  \frac{ \frac{25}{2} }{ \frac{25}{16} }  =  \frac{25}{2}  \times  \frac{16}{25}  =  \frac{1}{2}  \times  \frac{16}{1}   \\  \\ = 8 \:  :  \: 1

6 0
3 years ago
Given the system of inequalities:
Margaret [11]
Answer:
First inequality: y > \frac{4}{5} x - \frac{1}{5}
Second inequality: y < 3 + x

Explanation:
The inequality in slope-intercept form has the following general formula:
y < mx + c or y > mx + c (according to the given sign)
where m is the slope and c is the y-intercept

This means that to get any inequality in slope-intercept form, we will have to isolate the y on one side of the inequality.

First given inequality:
4x - 5y < 1
4x - 5y + 5y < 1 + 5y
1 + 5y > 4x
1 + 5y - 1 > 4x - 1
5y > 4x - 1
y > \frac{4}{5} x -  \frac{1}{5}
comparing this to the general form, we would find that:
slope (m) = 4/5
y-intercept (c) = 1/5

Second given inequality:
y - x < 3
y - x + x < 3 + x
y < 3 + x
comparing this to the general form, we would find that:
slope (m) = 1
y-intercept (c) = 3

Hope this helps :)
8 0
4 years ago
Read 2 more answers
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