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2 years ago

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The sum of the measures of angle A and angle B is 180 degrees. The measure of angle A is (4x + 12) The measure of angle B is 60

degrees What is the value of x?

1 answer:

BARSIC [14]2 years ago

5 0

Answer:

Rolf prepares four solutions using different solutes as shown in the table be❤️low.

Which solution is unsaturated?

Solution A

Solution B

Solution C

Solution D

Step-by-step explanation:

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(CO6) From a random sample of 68 businesses, it is found that the mean time that employees spend on personal issues each week is

satela [25.4K]

Answer:

(1) (4.82, 4.98)

(2) Large sample size

(3) Yes, the temperature is within the confidence interval of (37.40, 37.60)

(4) (15.083, 15.117)

Step-by-step explanation:

Confidence Interval (CI) = mean + or - (t×sd)/√n

(1) mean = 4.9, sd = 0.35, n = 68, degree of freedom = n-1 = 68 - 1 = 67

t-value corresponding to 67 degrees of freedom and 95% confidence level is 1.9958

CI = 4.9 + (1.9958×0.35)/√68 = 4.98

CI = 4.9 - (1.9958×0.35)/√68 = 4.82

CI is (4.82, 4.98)

(2) Error margin = (t-value × standard deviation)/√sample size

From the formula above, error margin varies inversely as the square root of the sample size. Since the relationship between the error margin and sample size is inverse, increase in one (sample size) will conversely lead to a decrease in the other (error margin)

(3) mean = 37.5, sd = 0.6, n= 100, degree of freedom = n-1 = 100-1 = 99

t-value corresponding to 99 degrees of freedom and 90% confidence level is 1.6602

CI = 37.5 + (1.6602×0.6)/√100 = 37.5 + 0.10 = 37.60

CI = 37.5 - (1.6602×0.6)/√100 = 37.5 - 0.10 = 37.40

37.53 is within the confidence interval (37.40, 37.60)

(4) mean = 15.10, sd =0.08, n = 104, degree of freedom = n-1 = 104-1 = 103

t-value corresponding to 103 degrees of freedom and 97% confidence interval is 2.2006

CI = 15.10 + (2.2006×0.08)/√104 = 15.10 + 0.017 = 15.117

CI = 15.10 - (2.2006×0.08)/√104 = 15.10 - 0.017 = 15.083

CI is (15.083, 15.117)

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3 years ago

The modified accelerated cost recovery system (MACRS):

ZanzabumX [31]

bahala kau ha ha. Matt wahak

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2 years ago

For each question, each pair of triangles are similar but not drawn to scale. Calculate any lettered lengths.

Karolina [17]

Answer:

a. 20

b. 5

Step-by-step explanation:

The scale factor is 5 because 6×5=30

a. 4×5=20

b. 25÷5=5

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2 years ago

I xyzdS<br> trong đó S là phần mặt<br> 2 2<br> z x y<br> nằm giữa hai mặt phẳng z =<br> 0 và z = 1

Anni [7]

Step-by-step explanation:

ewtjsgmsgmgdmgqrhwtjwth<u>w</u><u>t</u><u>j</u>

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3 years ago

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nadya68 [22]

Answer:

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Step-by-step explanation:

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3 years ago