Isn’t it easier to write sin 2theta = 2 sin theta and not bother memorizing the double-angle formula

Answers

Answer 1

Answer:

First off, sin 2 theta = 2 sin theta cos theta. Also, the answer to your question is no. There are multiple double angle formulas, and it is important that you remember them so that you can answer questions correctly.

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How do you change 5.5 into a fraction?

Answers

5.5 in fraction is 5 1/2

hope that helps :)

5. 5 = 5 + 5 = 5/10 = 5 1/2
5.5 = 55/10 = 11/2 = 5 1/2
5.5 = 5 1/2 ⇔ at the same point you'll need to know that 0.5 = 1/2

a restaurant chain ordered 3,940 pounds of rice in 20-pound bags. About how many 20 pound bags of rice did the chain order?

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The restaurant ordered 197 bags of rice bags. All you have to do to get this answer is to divide 3,940 by 20, do this and you get 197.

197 punds because 3940 divided by 20 =197....hoeps this helps

Find the Difference 9,052-7,391

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The answer for this problem is 1661

David can finish painting the room in 6 hours, and his elder brother Antony can finish it in 4 hours. If both brothers paint the room together, how many hours will it take them?

Answers

Both brothers paint the room together, it will take 2 hours 22 minutes.

Given that,

David can finish painting the room in 6 hours,

And his elder brother Antony can finish it in 4 hours.

We have to determine,

If both brothers paint the room together, how many hours will it take them.

According to the question,

David can finish painting the room in 6 hours,

And his elder brother Antony can finish it in 4 hours.

The combined time is given by the following formula.

Therefore,

For both brothers paint the room together, how many hours will it take them,

Taking reciprocal of both brothers time.

Then,

$(1)/(6) + (1)/(4) = (1)/(t) \n\n(2+3)/(12) = (1)/(t) \n\nt = (12)/(5) \n\nt = 2.4$

Which is equals to 2 hours 22 minutes.

Hence, Both brothers paint the room together, it will take 2 hours 22 minutes.

For more information about Division click the link given below.

brainly.com/question/16663851

Answer:

Step-by-step explanation:

1/6+1/4=5/12

5/12 of the job is done in 1 hour

5/12+5/12= 10/12

so 10/12 of the job is done in 2 hours

and then simplify 5/6 so then add 1/6

so it is done in 2 hours and 24 minutes

what are some characteristics for simplest form

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Ex. 9 divided by 3=3 because 3x3=9

can you find the cube root of a negative number? if so, is it positive or negative? explain your reasoning

Answers

yes you can and it is negative because if you think about it, the answer to the 3rd power is your original question, so for example, -8 would equal to the answer times itself 3 times
now ask yourself, does 2 times itself 3 times = to -8
or -2 times itself 3 times = to -8

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