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olganol [36]
2 years ago
11

Sin3A/sinA-Cos3A/CosA=2​

Mathematics
1 answer:
Kay [80]2 years ago
7 0

Answer:

sin3A/sinA-Cos3A/CosA=2​

taking LCM

= <u>Sin3A.CosA - Cos3A. SinA</u>

     SinA . CosA

= <u>Sin(3A-A)</u>

  SinA . CosA

= <u>  Sin2A          </u>

   SinA . CosA

= <u>2 SinA. CosA</u>

    SinA . CosA

=2

Step-by-step explanation:

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Assume the returns from an asset are normally distributed. The average annual return for the asset is 17.4 percent and the stand
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Answer:

0.13%

Step-by-step explanation:

Mean, u = 17.4%

standard deviation, sd = 27.5%

We are looking for the probability that the money will double in value. Therefore we are looking for the value of x = 100% (meaning the value is 100% more that the previous year)

Find the value of z-score

z = (x-u)/sd

  = (100 - 17.4) / 27.5 = 3.003

Find the z score using the z-table

From z-table at P(z<3.003) = 0.9987

So, for the probability that it the money will be double is

P (Z>2.8982) = 1 - P(z<2.8982)

                      = 1- 0.9987

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2 years ago
Carey is trying to decide between two guitars. The first had an original price of $160, but is on sale for $100. The second had
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The second guitar is the answer because it has a lower amount than the first but not by alot
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2 years ago
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After four years of college, Erica has to start paying off all her student loans. Her first payment is due at the end of this mo
tatiyna

Answer:

Therefore, the approximate monthly payment is $548.85

Step-by-step explanation:

The amount of student loans Erica currently has = $34,006.00

The duration over which Erica is to pay back the loan = 7 years

The annual interest rate for the loan = 9.1%

Therefore, we have the geometric sequence formula is given as follows;

A_n = P( 1 + r)^n - M \times \left [ \dfrac{(1 + r)^n-1}{r} \right ]

Where;

M = The monthly payment

P = The initial loan balance = $34,006.00

r = The annual interest rate = 9.1%

n = The number of monthly payment = 7 × 12 = 84

Aₙ = The amount remaining= 0 at the end of the given time for payment

Substituting the values into the above formula, , we get;

0 = 34006 \times \left ( 1 + \dfrac{0.091}{12} \right )^{84} - M \times \left [ \dfrac{\left (1 + \dfrac{0.091}{12} \right )^{84}-1}{\dfrac{0.091}{12} } \right ]

M = \dfrac{34006 \times \left ( 1 + \dfrac{0.091}{12} \right )^{84}  }{\left [ \dfrac{\left (1 + \dfrac{0.091}{12} \right )^{84}-1}{\dfrac{0.091}{12} } \right ]} \approx 548.85

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6 0
2 years ago
The number of tickets issued by a meter reader for parking-meterviolations can be modeled by a Poisson process with a rateparame
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Answer:

Step-by-step explanation:

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X is Poisson with parameter =5per hour

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3 0
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American households spent an average of about $52 in 2007 on Halloween merchandise such as costumes, decorations and candy. To s
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Answer:

The sample mean is$ 52

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Step-by-step explanation:

American households spent an average of about $52 in 2007 on Halloween merchandise such as costumes, decorations and candy. This tells you that the sample mean is$ 52.

1500 households were surveyed in 2008 and found an average spending of $58 0n Halloween tell us that the claim's population mean is $58

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2 years ago
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