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yawa3891 [41]
2 years ago
14

Looking up, Felipe see two two hot air balloons in the sky shown. He determines that the lower hot air balloon is 515 meters awa

y, at an angle of 15 degrees from the vertical. The higher hot air balloon is 840 meters away , at an angle 22 degrees from the vertical. How much is the balloon on the right than the balloon on the left? Do not round any intermediate computations. Round your answer to the nearest tenth
Mathematics
1 answer:
OlgaM077 [116]2 years ago
5 0

Answer:

281.4

Step-by-step

This is the answer

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You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on con
Naddika [18.5K]

Answer:

The sample size is    n = 68

Step-by-step explanation:

From the question we are told that

    The margin of error is  E = 5 \ years

     The standard deviation is  \sigma = 22

From the question we are told the confidence level is  94% , hence the level of significance is    

      \alpha = (100 - 94 ) \%

=>   \alpha = 0.06

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  1.881

Generally the sample size is mathematically represented as  

   n = [\frac{Z_{\frac{\alpha }{2} } *  \sigma }{E} ] ^2

=>  n = [\frac{1.881 } *  22 }{5} ] ^2

=>  n = 68

8 0
3 years ago
Find the value of x. Write it as a decimal.
makkiz [27]

Answer:

68.5

Step-by-step explanation:

Arc ABE = 360 - 2x

Arc AE = 2x

half the difference between the two arcs is 43

43 = \frac{1}{2} [360 -2x - (2x)]    

7 0
3 years ago
NEED HELP ASAP! BRAINLIEST will be granted!!!
noname [10]

Answer:

1.72222\ radians

Step-by-step explanation:

Given radius=9 and arc length=15.5.

arc\ length=radius\times central\ angle(radians)\\Central\ angle(radians)=\frac{arc\ length}{radius} \\

central\ angle=\frac{15.5}{9}=1.72222\ radians

7 0
3 years ago
Find the average rate of change (-4,-7)(-2,3)
Basile [38]
The average rate of change is m=5.
Hope this helped.
6 0
3 years ago
Find the total surface area of the following
xeze [42]

Step-by-step explanation:

The volume of the cone is:

1/3 *π* r² *h =

1/3 *π *4* 2square root of 3=

(8*square root of 3*π)/3

7 0
3 years ago
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