3 years ago

Ms. Sublett's math class is putting three

Mathematics

1 answer:

givi [52]3 years ago

4 0

Option 4 is your answer

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Which of the following is a non-real complex number?

Nat2105 [25]

A I think Sorry if it’s wrong

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3 years ago

A man burns 10 calories per minute mountain biking and 7.5 calories per minute in-line skating. His goal is to burn approximatel

Ipatiy [6.2K]

A.) 10x + 7.5 (0) =420
10x = 420
420 / 10 = 42

x = 42 > ( 42,0 )

10(0) + 7.5y = 420
7.5y = 420
420 / 7.25 = 56

y = 56 > ( 0,56 )

(42,0) (0,56)

B.) The x intercept means that there was 42 ,minutes spent biking. The y intercept means that there was 56 minutes spent in line skating.

C.) (21 ,28) - (14,37) - (28,18)

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3 years ago

How do I solve the equation in an interval from 0 to 2π ? 9 cos 2t = 6

Ivahew [28]

$9\cos(2t)=6\implies\cos(2t)=\dfrac23$

Using the fact that cos is 2π-periodic, we have

$\cos(2t)=\dfrac23\implies2t=\cos^{-1}\left(\dfrac23\right)+2n\pi$

That is, $\cos(\theta+2n\pi)=\cos\theta$ for any $\theta$ and integer $n$ .

$\implies t=\dfrac12\cos^{-1}\left(\dfrac23\right)+n\pi$

We get 2 solutions in the interval [0, 2π] for $n=0$ and $n=1$ ,

$t=\dfrac12\cos^{-1}\left(\dfrac23\right)\text{ and }t=\dfrac12\cos^{-1}\left(\dfrac23\right)+\pi$

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3 years ago

What’s the answer to this

ss7ja [257]

Answer:

I think D

Step-by-step explanation:

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3 years ago

A bag of colored candles contains 18 red candles and 27 blue candles. What percent of the candles are red?

Bond [772]

A whole bag of colored candles has 45 candles in it.
If 18 are red, then 27 are blue.
Blue: 27/45 = 3/5 = 0.6 = 60%
Red: 18/45 = 2/5 = 0.4 = 40%

* If you need anymore help or have any questions, feel free to ask me! I'd be happy to help you!

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3 years ago

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