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3 years ago

Hurry schools almost bitterly done pls hurry plssss'

Mathematics

1 answer:

Firlakuza [10]3 years ago

6 0

Answer:

1- 18x5

2- 9+9+9+9+9

3- 10x10

4- 8x

5- 7x5

6- 7+7+7

7- b+b+b+b

Hope this helps!

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Find the dr/d(theta) for: r = (theta)sin(theta) + cos(theta)

maxonik [38]

$r=\theta\sin\theta+\cos\theta$

$\dfrac{\mathrm dr}{\mathrm d\theta}=\dfrac{\mathrm d(\theta\sin\theta)}{\mathrm d\theta}+\dfrac{\mathrm d(\cos\theta)}{\mathrm d\theta}$

By the product rule,

$\dfrac{\mathrm d(\theta\sin\theta)}{\mathrm d\theta}=\dfrac{\mathrm d(\theta)}{\mathrm d\theta}\sin\theta+\theta\dfrac{\mathrm d(\sin\theta)}{\mathrm d\theta}=\sin\theta+\theta\cos\theta$

and

$\dfrac{\mathrm d(\cos\theta)}{\mathrm d\theta}=-\sin\theta$

So we have

$\dfrac{\mathrm dr}{\mathrm d\theta}=\sin\theta+\theta\cos\theta-\sin\theta$

$\implies\dfrac{\mathrm dr}{\mathrm d\theta}=\theta\cos\theta$

4 0

3 years ago

Problem solving to each question I need working out please take a picture of your working out thanks

4vir4ik [10]

I hope this helps you

5 0

3 years ago

Pls help!! need ur help math geniuses help with my last question! ty

Shtirlitz [24]

The expected value of the discrete distribution is of 20.97, hence option C gives the correct answer.

<h3>What is the mean of a discrete distribution?</h3>

The expected value of a discrete distribution is given by the sum of each outcome multiplied by it's respective probability.

Hence, according to the table, the expected value is given by:

E(X) = 12 x 0.08 + 18 x 0.15 + 20 x 0.31 + 22 x 0.08 + 24 x 0.15 + 25 x 0.23 = 20.97.

More can be learned about the expected value of a discrete distribution at brainly.com/question/26660401

#SPJ1

7 0

2 years ago

Antonio sold skis for $220. His wholesale cost was $165. What was the percent markup?

natali 33 [55]

Answer:

Antonio paid $220 for skis he sold for $165, so his profit was $55.

Markup is a percentage increase from the wholesale price,

so let's find the percentage of $55 to $165:

$55/$165 = 33% .

7 0

3 years ago

The cost of dozen eggs depends on the size of eggs what is the independet value?

gavmur [86]

The size of the egg is the independent value.

8 0

3 years ago