2 years ago

How to do this. It’s hard

Mathematics

2 answers:

brilliants [131]2 years ago

8 0

I believe it’s y= 10

Black_prince [1.1K]2 years ago

4 0

I think the answer is y=10

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The nth term of a sequence is 6 - n work out the first three terms and the 20th term of the sequence.

timurjin [86]

Step-by-step explanation:

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➜a_1=6-1

➜,a_2=6-2

➜a_3=6-3

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2 years ago

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Blizzard [7]

Answer:

Length: 30m

Width: 12m

Step-by-step explanation:

Length: 2x+6 meters Width: x meters

2(2x+6) meters + 2(x) meters

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3 years ago

Which of the following is an equivalent expression for tan to the power of minus 1 end exponent x plus tan to the power of minus

tino4ka555 [31]

Answer:

Step-by-step explanation:

To solve this, remember some properties of trigonometric functions.

Let $y=\tan^{-1} (x)$ . Then, by definition of inverse function, $\tan(y)=x$ . Multiply by -1 to both sides of this equation to get $-\tan(y)=-x$ .

Note that $-\tan(y)=\frac{-\sin(y)}{\cos(y)}=\frac{\sin(-y)}{\cos(y)}=\frac{\sin(-y)}{\cos(-y)}=\tan(-y)$ because sine is an odd function and cosine is an even function. Then $\tan(-y)=-x$ . Take the inverse tangent in both sides to get $-y=\tan^{-1} (-x)$ .

Using the previous equations, we obtain:

$\tan^{-1} (x)+\tan^{-1} (-x)=y+(-y)=0$

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3 years ago