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Fittoniya [83]
3 years ago
7

The graph of a limacon curve is given. Without using your graphing calculator, determine which equation is correct for the graph

.
r = 2 + 2 sin θ
r = 3 + 2 sin θ
r = 1 + 3 sin θ
r = 3 + sin θ

Mathematics
1 answer:
zhannawk [14.2K]3 years ago
3 0

Answer:

  r = 3 + sin(θ)

Step-by-step explanation:

The curve extends below the x-axis, so the added constant must be larger than the coefficient of the sine function. There are two choices matching that description.

The extent in the -y (θ=-π/2) direction looks to be about 2/3 of the extent in the +x (θ=0) direction, so we expect the appropriate equation is ...

  r = 3 + sin(θ)

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AnnZ [28]

Answer:

option (D) is the right answer

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A radioactive substance decays according to the formula A=A0e^kt
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4 0
3 years ago
Suppose the average math SAT score for students enrolled at local community college is 490.4 with a standard deviation of 63.7.
lakkis [162]

Answer:

Option B) 9.1      

Step-by-step explanation:

We are given the following in the question:

Average score = 490.4

Standard deviation = 63.7

Sample size, n = 49

Formula:

=\dfrac{\sigma}{\sqrt{n}}

Putting values, we get,

Standard error =

=\dfrac{\sigma}{\sqrt{n}} = \dfrac{63.7}{\sqrt{49}} = 9.1

Thus, the correct answer is

Option B) 9.1

8 0
2 years ago
PZ PLZ PLZ HELP I DO NOT UNDERSTAND THIS KINDA OF STUFF IF U DONT KNOW DO NOT ANSWER IT I ACTUALLY NEED HELP NO LINKS PLZ PLZ
ivanzaharov [21]

Answer:

176

Step-by-step explanation:

11x11=121

12x11=132

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11x16=176

Hope this helped you :D

And pls give me brainlist if you can

7 0
3 years ago
Read 2 more answers
Need help in this please​
Alona [7]
Hmmm this is a little hard I believe c
8 0
3 years ago
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