3 years ago

Please help me please

1 answer:

4 0

Answer: look at the bottom. Count how many spots there is until u get to the dot. Then do this horizontal. Ur welcome:))

Step-by-step explanation:

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Answer:

?= 3

Step-by-step explanation:

let x = ？

18-2x=4x

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x=3

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A California condor left its cliff-side nest and soared downwards at a rate of 16 meters per second. After 8 seconds, the bird s

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3 years ago

3sina-4sin4a/sin5a<br> if a=-45 degree

Ierofanga [76]

Given:

The given expression is:

$\dfrac{3\sin a-4\sin 4a}{\sin 5a}$

To find:

The value of the given expression at $a=-45$ .

Solution:

We have,

$\dfrac{3\sin a-4\sin 4a}{\sin 5a}$

Substituting $a=-45$ , we get

$\dfrac{3\sin (-45)-4\sin [4(-45)]}{\sin [5(-45)]}$

$=\dfrac{-3\sin (45)+4\sin (180)}{-\sin (225)}$

$=\dfrac{-3\sin (45)+4\sin (180)}{-\sin (180+45)}$

$=\dfrac{-3\sin (45)+4\sin (180)}{\sin (45)}$

On substituting $\sin (180)$ , we get,

$=\dfrac{-3\sin (45)+4(0)}{\sin (45)}$

$=\dfrac{-3\sin (45)+0}{\sin (45)}$

$=\dfrac{-3\sin (45)}{\sin (45)}$

$=-3$

Therefore, the value of the given expression at $a=-45$ is $-3$ .

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3 years ago

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aleksklad [387]

Answer:

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Hope you got your answer.

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