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3 years ago

5

Helppppppppppppp meeeee pleaseeeeeee

1 answer:

Arte-miy333 [17]3 years ago

3 0

Answer:

I'm pretty sure it's the first and last one

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All possible solutions for 6sin^2(3x)=-3

vova2212 [387]

Answer:

Please check the step-by-step explanation for the answer.

Step-by-step explanation:

Considering the trigonometric expression

$6sin^2\left(3x\right)=-3$

Steps

$\mathrm{Let:\:}\sin \left(3x\right)=u$

$6u^2=-3$

$\mathrm{Divide\:both\:sides\:by\:}6$

$\frac{6u^2}{6}=\frac{-3}{6}$

$u^2=-\frac{1}{2}$

$\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}$

$u=\sqrt{-\frac{1}{2}},\:u=-\sqrt{-\frac{1}{2}}$

$\mathrm{Simplify}\:\sqrt{-\frac{1}{2}}$

$\mathrm{Apply\:radical\:rule}:\quad \sqrt{-a}=\sqrt{-1}\sqrt{a}$

$=\sqrt{-1}\sqrt{\frac{1}{2}}$

$\mathrm{Apply\:imaginary\:number\:rule}:\quad \sqrt{-1}=i$

$=i\sqrt{\frac{1}{2}}$

Similarly,

$-\sqrt{-\frac{1}{2}}=\quad -i\sqrt{\frac{1}{2}}$

So,

$u=i\sqrt{\frac{1}{2}},\:u=-i\sqrt{\frac{1}{2}}$

$\mathrm{Substitute\:back}\:u=\sin \left(3x\right)$

$\sin \left(3x\right)=i\sqrt{\frac{1}{2}},\:\sin \left(3x\right)=-i\sqrt{\frac{1}{2}}$

So,

$\sin \left(3x\right)=i\sqrt{\frac{1}{2}}\quad :\quad \mathrm{No\:Solutions}$

and

$\sin \left(3x\right)=-i\sqrt{\frac{1}{2}}\quad :\quad \mathrm{No\:Solutions}$

$\mathrm{Combine\:all\:the\:solutions}$

$\mathrm{No\:Solution\:for}\:x\in \mathbb{R}$

Keywords: trigonometric equation, solution

Learn more about trigonometric equation solution from brainly.com/question/1687218

#learnwithBrainly

5 0

3 years ago

PLEASE HELP ME I HAVE OTHER WORK TO DO PLEASE HELP omg

kolbaska11 [484]

1. Decimal .25 percent 25%

Uhh I'm not good with this that's all I know‍♂️

3 0

3 years ago

Marc bought five of the same item for $18.75. what was the unit price per item?

Pavel [41]

........."..............

5 0

4 years ago

A clothing store uses comment cards to get feedback from its customers about newly added items. It recently introduced plus size

irga5000 [103]

Answer:

The percentage of customer would less likely to purchase next item is 26.2%

So, The nearest option will be (e).

Step-by-step explanation:

Given that,

The table of information is

Response = Very satisfied, Satisfied, less than fully satisfied and not satisfied

Frequency = 15, 30, 12 and 4

We need to calculate the total frequency

Using given frequency

$Total\ frequency = 15+30+12+4$

$Tota\ frequency = 61$

We need to calculate the total number of customers less or not fully satisfied

Using given data

$x = 12+4$

$x=16$

Where, x = total number

We need to calculate the percentage of customer would less likely to purchase next item

Using formula for percentage

$percentage\ of\ customer=\dfrac{total\ number\ of\ customer}{total\ frequency}\times100$

Put the value into the formula

$percentage\ of\ customer=\dfrac{16}{61}\times100$

$percentage\ of\ customer=26.2\%$

Hence, The percentage of customer would less likely to purchase next item is 26.2%

So, The nearest option will be (e).

6 0

4 years ago

castortr0y [4]

Answer:

B) >

Step-by-step explanation:

61.30 is greater than 61.28 by 0.2. and the second sign, (>), compares that 61.30 is greater than

8 0

3 years ago

Read 2 more answers