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marin [14]
3 years ago
10

Sin(5x) cos(3x)-1/2sin(8x) = sin(x) cos(x)

Mathematics
1 answer:
aleksandrvk [35]3 years ago
7 0

Answer:

x=70

Step-by-step explanation:

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(1 point) A random sample of 600 movie goers in Flagstaff found 252 movie goers who had bought popcorn on their last visit. Find
garik1379 [7]

<u>Answer-</u>

A 95% confidence interval for the true percent of movie goers is 36.41% to 44.25%

<u>Solution-</u>

Given,

n = 600 (sample size)

x = 252 (number of people who bought)

Confidence interval = 95%, so z = 1.96

We know that,

\mu = M\pm Z(SE)

where,

M = sample mean

Z  = Z statistic determined by confidence level

SE = standard error of mean

Calculating the values,

M=\frac{x}{n} =\frac{242}{600} =0.4033

Z=1.96 from the tables

SE=\sqrt{\frac{M\times (1-M)}{n}}

\Rightarrow SE=\sqrt{\frac{0.4033\times (1-0.4033)}{600}}=0.02

Putting all the values in the formula,

\mu = M\pm Z(SE)

\mu = 0.4033\pm 1.96(0.02)

=0.4033\pm 0.0392

=0.4425, 0.3641

= 44.25\%,36.41\%

5 0
3 years ago
What is the sum of 4 2/4 + 7 4/5 ?
lilavasa [31]
12.3 or 12 3/10

4.5 + 7.8 = 12.3

or

4 10/20 + 7 16/20 = 11 26/20

11 26/20 can be simplified to 12 6/20 and further simplified to 12 3/10
7 0
2 years ago
Write 863.141 in expanded form
Mashutka [201]
Eight hundred sixty three and 1 hundred 41 thousandths
6 0
2 years ago
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6.
Daniel [21]
Answer: D opposite angles in all quadrilateral are congruent true
4 0
3 years ago
Write the inequality for the situation.<br><br> The number g is greater than 25
AleksAgata [21]

Answer:

g > 25

I hope this helps you :D

6 0
2 years ago
Read 2 more answers
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