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Ratling [72]
3 years ago
6

Identify sin Y as a fraction and as a decimal rounded to the nearest hundredth. Help please!!

Mathematics
1 answer:
Lina20 [59]3 years ago
5 0

sine=\dfrac{opposite}{hypotenuse}

We have

opposite7.4\\hypotenuse=10.9

Substitute:

\large\boxed{\sin Y=\dfrac{7.4}{10.9}\approx0.68}

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Your start-up business is looking into the energy usage in the community of south lawndale. your sample size is 12 months. use t
Aleonysh [2.5K]

The confidence interval at 95% level is

7106.87 <  μ< 14255.27

<h3>What is meant be mean and standard deviation?</h3>

The ratio of sum of observations to the total number of observation is known as mean. It is one of the central tendency in the statistics. It gives an idea about the central value present in the data. The most sensitive measure of central tendency is mean. It is very easy to calculate. Mean playa a crucial role in daily life. The two types of means are Arithmetic mean and Geometric mean.

Standard deviation is a measure in the statistics. The amount of variation of a set of values is known as standard deviation. Standard deviation is denoted by σ.

As per given data

90% confident level for amount of electricity used in community of Austin is

X-tx/2(n-1)s/√n < μ < X+ tx/2(n-1)s/√n

Here , n=12 ,  X=10681.07 , s=6893.87

Margin of error = tx/2(n-1)s/√n

=(1.796×6893.87)/√12

=3574.1996

=3574.19(approximately)

Therefore, 90% CI is,

10681.07-3574.19 ≤ μ<10681.07+3574.19

7106.87 <  μ< 14255.27

To know more about mean and standard deviation, visit:

brainly.com/question/14720855

#SPJ4

5 0
1 year ago
3w squared-8w+4=0<br><br>(solving quadartc equations by factoring)
deff fn [24]
3w^2-8w+4=0\\\\3w^2-6w-2w+4=0\\\\3w(w-2)-2(w-2)=0\\\\(w-2)(3w-2)=0\\\\w-2=0\ \ \ or\ \ \ 3w-2=0\\\\w=2\ \ \ \ \ \ \ \ \  \ \ \ \ \ \ w= \frac{2}{3}
3 0
3 years ago
Read 2 more answers
Find size of angle x<br><br>pls.. <br><br><br>​
mina [271]

Answer:

x = 115

Step-by-step explanation:

Sum of angles around a point = 360

i.e,

=> 164 + 81 + x = 360

=> 245 + x = 360

=> x = 360 - 245

=> x = 115

6 0
2 years ago
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Convert 40g into degrees​
Lera25 [3.4K]

Answer:

40g=  36 in degrees (decimal), and 36 degrees 0' 0" in degrees (Minutes&Seconds)

Step-by-step explanation:

8 0
3 years ago
Write an expression to show the total amount in Trey's savings account after m months
sveta [45]

Answer:

75 +25m

Step-by-step explanation:

You should add the starting amount which is 75 to the 25m and plus I got it right . lol

5 0
3 years ago
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