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Leto [7]
3 years ago
11

Please help me please please please

Mathematics
2 answers:
algol133 years ago
5 0

Answer:

20

Step-by-step explanation:

The lower quartile Q₁ is the value at the left side of the box, that is

Q₁ = 20

svetlana [45]3 years ago
4 0
The answer is 20. Since the first quartile is 20 and the second quartile is 80
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2sin(4x)+6=5
a_sh-v [17]

Let's solve the sine equation.

1. Express sine function in the left side of equation:

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2. Use the genereal solution to get the solution of your equation:

4x=(-1)^n\arcsin \left(-\dfrac{1}{2}\right) +2\pi n, where n\in Z.

3. Find \arcsin \left(-\dfrac{1}{2}\right):

\arcsin \left(-\dfrac{1}{2}\right)=-\dfrac{\pi}{3}.

4. Substitute part 3 into part 2 and express x:

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5. Solutions of your equation are:

x=(-1)^{n+1}\cdot \dfrac{\pi}{12}+\dfrac{\pi n}{2}, where n\in Z.


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3 years ago
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