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Sladkaya [172]
3 years ago
11

HELP PLEASE ASAP IF NOT RIGHT ANSWER WILL BE REPORTED!!!

Mathematics
2 answers:
IceJOKER [234]3 years ago
4 0

Answer:

Answer

its obvious is A

Step-by-step explanation:

just cal it

Firdavs [7]3 years ago
3 0

Answer:

None of the above

Step-by-step explanation:

x-(-x)+y

x+x+y

2x+y

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15 1/4 - ? = 12 3/4 plsss help me
wariber [46]
1 and 1/2 is the right one
8 0
3 years ago
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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
Analyze the line below and answer the question that follows.<br><br> What is a name of the line?
Nuetrik [128]

Answer:

Option D is the correct option

4 0
3 years ago
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Solve for x. <br>Bx (4x + 30) F bisects &lt;CDE.​
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8x = 4x+30

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Hope this helps!! Have a good day and remember to be tiger fierce!! :)

5 0
2 years ago
Find the measurement of angle 7
Inessa [10]

Answer:

76 degrees

Step-by-step explanation:

find angle 5 by subtracting 76 from 180 to get 104 degrees

the find angle 7 by subtracting 104 from 180 to get 76

180-76 =104

180-104=76

6 0
3 years ago
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