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notka56 [123]
3 years ago
12

When simplified ,

20" id="TexFormula1" title=" \frac{15x {}^{4} }{30x {}^{2} } " alt=" \frac{15x {}^{4} }{30x {}^{2} } " align="absmiddle" class="latex-formula">
is:
​
Mathematics
1 answer:
vlada-n [284]3 years ago
6 0

Answer:

\frac{x^{2} }{2}

Step-by-step explanation:

⇒ \frac{15x^{4} }{30x^{2} }

⇒ \frac{x^{2} }{2 }

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Solve 4 cos2x-3 = 0 for all real values of x.
vichka [17]

4 cos² x - 3 = 0

4 cos² x = 3

cos² x = 3/4

cos x = ±(√3)/2

Fixing the squared cosine doesn't discriminate among quadrants.  There's one in every quadrant

cos x = ± cos(π/6)

Let's do plus first.  In general, cos x = cos a has solutions x = ±a + 2πk integer k

cos x = cos(π/6)

x = ±π/6 + 2πk

Minus next.

cos x = -cos(π/6)

cos x = cos(π - π/6)

cos x = cos(5π/6)

x = ±5π/6 + 2πk

We'll write all our solutions as

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3 0
3 years ago
5 = 1 and 5 in a fraction and w
vovangra [49]
What we want to do first is isolate the variable. To do this we need to multiply each side by 5 to remove the fraction

5 * 5 = 5* \frac{1}{5} w
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5 * 5 = 25
    Then we get...
25 = w

There's your answer!

7 0
3 years ago
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What is the equation of the parabola that intersects the x-axis at points (-8,0) and (8,0)?
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Who was the first president of united state
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Alina [70]

Answer:

0.324

Step-by-step explanation:

Given that :

Success rate = 30%

p = 30% = 0.3

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P(x = 2) = 0.324

3 0
3 years ago
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