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shutvik [7]
3 years ago
13

How can I solve this?

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
3 0

The 3 inside angles need to equal 180 degrees.

Angle K is given as 48 degrees.

Angle M would be 90 degrees.

Angle J = 180 - 90 - 48 = 42

Angle J = 42 degrees

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A local company wants to evaluate their quality of service by surveying their customers.
stich3 [128]

Answer: b. 0.98

Step-by-step explanation:

The formula to find the maximum error of the estimated mean :

E=z^*\dfrac{\sigma}{\sqrt{n}}            (1)

, where \sigma = standard deviation

n= Sample size

z* = Critical z-value.

As per given , we have

\sigma=5

n=100

Critical value for 95% confidence interval = z*=1.96

Put these values in the formula (1), we get

E=(1.96)\dfrac{5}{\sqrt{100}}

E=(1.96)\dfrac{5}{10}=0.98

Hence, the maximum error of the estimated mean quality for a 95% level of confidence is 0.98.

Therefore , the correct answer is b. 0.98 .

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3 years ago
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ycow [4]
Travel at the speeds of 65 miles per hour to drive the distance of 310 miles (if the speed in which the person in question is traveling at the same speed) =
310 divided  by 65 = \frac{310}{65}
= 4 and \frac{10}{13} hours 
since it is "traveled distance = speed multiplied by time it takes 

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3 years ago
80 POINTS!!!!!!
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Plz dont be mean to me i just wanna understand and also its the blue line for answer 1
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1.) D
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Answer:

1.52

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