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2 years ago

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Mathematics

1 answer:

Juli2301 [7.4K]2 years ago

8 0

A 4.2%
Explanation: that might be the answer ✌︎☆♪ ٩( ᐛ )و

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I don’t understand how to do this

schepotkina [342]

Answer:

The solution is $x =0.$

Step-by-step explanation:

The equation

$\bold{(1).}\: sin(\dfrac{3\pi }{2} +x)+sin(\dfrac{3\pi }{2} +x) =-2$

can be rewritten as

$2* sin(\dfrac{3\pi }{2} +2) =-2$

and can be further simplified to

$sin(\dfrac{3\pi }{2}+x ) =-1$ .

Now, taking the inverse sine of both sides we get:

$sin^{-1}(sin(\dfrac{3\pi }{2} +x) =sin^{-1}(-1)$

$\bold{(2).}\: \dfrac{3\pi }{2} +2 =sin^{-1}(-1)$

The value of the right side on the interval $[0,2\pi)$ is

$sin^{-1}(-1) = \dfrac{3\pi}{2} \: \:( \text{or }270^o)$ ,

which makes the equation (2)

$\dfrac{3\pi }{2}+x =\dfrac{3\pi}{2}$

solving for $x$ gives

$\boxed{x = 0}$

which is our solution.

4 0

2 years ago

Help plz points 10 need help

Jobisdone [24]

Answer:

208

Step-by-step explanation:

6 0

2 years ago

What is the length of segment AB?<br> 7<br> 9<br> 18<br> 25

Usimov [2.4K]

Answer:

Nobody likes a short, one-word-answer. Let’s make sure other people understand everything.

Step-by-step explanation:

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2 years ago

The radius of a circle is 6mm. What is the area of the shaded portion of the circle.

mariarad [96]

Answer:

b) 29π mm²

Step-by-step explanation:

$\frac{360}{360} - \frac{70}{360} = \frac{290}{360} \\ \\\pi \: {r}^{2} \\ = \frac{290}{360} \times \pi\times 6 \times 6 \\ = 29 \: \pi \: {mm}^{2}$

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3 years ago

A quality analyst wants to construct a sample mean chart for controlling a packaging process. He knows from past experience that

rosijanka [135]

Using it's concept, it is found that the sample mean package weight for Thursday is of 19 ounces.

The mean of a data-set is given by the <u>sum of the observations divided by the number of observations</u>.

For Thursday, the package weights in ounces are given by: {18, 19, 20, 19}.

Hence, the sample mean in ounces is of:

M = (18 + 19 + 20 + 19)/4 = 19.

More can be learned about the mean concept at brainly.com/question/24628525

3 0

2 years ago