<img src="https://tex.z-dn.net/?f=2x%5E2%2B40%3D0" id="TexFormula1" title="2x^2+40=0" alt="2x^2+40=0" align="absmiddle" class="l

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Sergeu [11.5K]

3 years ago

atex-formula">

Mathematics

1 answer:

aalyn [17]3 years ago

7 0

Answer:

x^2 = -20

Step-by-step explanation:

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The answer I put is wrong. SO don't put that as a answer. NEED TO EXPLAIN VERY IMPORTANT

n200080 [17]

Answer:

Step-by-step explanation:

OK 250 divided by 40 equals 6.25 so she would need 6 bags at least, i would say its your answer but you said its wrong so

5 0

3 years ago

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Please someone help me...

laiz [17]

Step-by-step explanation:

First factor out the negative sign from the expression and reorder the terms

That's

$\frac{1}{ - (( \tan(2A) - \tan(6A) )} - \frac{1}{ \cot(6A) - \cot(2A) }$

<u>Using trigonometric </u><u>identities</u>

That's

<u>Rewrite the expression</u>

That's

$\frac{1}{ - (( \tan(2A) - \tan(6A) )} - \frac{1}{ \frac{1}{ \tan(6A) } } - \frac{1}{ \frac{1}{ \tan(2A) } }$

We have

<u>Rewrite the second fraction</u>

That's

Since they have the same denominator we can write the fraction as

$- \frac{1 + \tan(6A) \tan(2A) }{ \tan(2A) - \tan(6A) }$

Using the identity

<u>Rewrite the expression</u>

We have

<u>Using the trigonometric identity</u>

<u>Rewrite the expression</u>

That's

Which is

<u>Using the trigonometric identity</u>

Rewrite the expression

That's

<u>Simplify the expression using symmetry of trigonometric functions</u>

That's

<u>Remove the parenthesis </u>

We have the final answer as

As proven

Hope this helps you

6 0

3 years ago

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Is this the right answer?

Viktor [21]

Yes that is correctamundo..............

5 0

3 years ago

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<img src="https://tex.z-dn.net/?f=%2815%2B23%29%2B7%3D15%2B%28_______%2B7%29" id="TexFormula1" title="(15+23)+7=15+(_______+7)"

Tanya [424]

If your looking for solutions their will be zero. Since 15+23+7=15+7 is false, there is no solution.

4 0

3 years ago

Find the values of x and y that satisfy the equation.<br><br> 3x+6i=27+yi<br> x

Misha Larkins [42]

Answer:

x = 9

y = 6

Step-by-step explanation:

3x+6i=27+yi

The real components have to be equal and the imaginary components have to be equal

3x = 27

divide by 3

3x/3 = 27/3

x=9

6i = yi

Divide by i

6 = y

3 0

3 years ago

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