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svet-max [94.6K]
3 years ago
14

Find the exact value of y.

Mathematics
1 answer:
Scilla [17]3 years ago
8 0

Answer:

y = \sqrt{3}

Step-by-step explanation:

Use 45-45-90 triangle proportions y: y : y\sqrt{2}

The hypotenuse is y\sqrt{2} so \sqrt{6}=y\sqrt{2}

y = \sqrt{3}

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Answer:

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Step-by-step explanation:

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7/12-9/8(2x-1)-5/6(3x+2)
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3 years ago
Calculate the sum of the first 50 terms in the sequence
Anestetic [448]

Answer:

90

Step-by-step explanation:

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Helppp. How do we get the triangles together?
Darina [25.2K]

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Step-by-step explanation:

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3 years ago
A sample of size 20 from a normal distribution has sample mean 3.5 and sample variance 14.75. Find 90% confidence intervals for
aleksley [76]

Answer:

Variance =9.2983, 27.6927

Standard deviation = 3.0493, 5.2624

Step-by-step explanation:

n = 20

S = 14.75

X² = chisquare

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Alpha = 0.1

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1-0.1/2 = 0.95

Using statistics table

X² 19,0.05 = 30.14

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A. 19(14.75)/30.14 , 19(14 75)/10.12

= 9.2983, 27.6927 for the variance of the population

B. Standard deviation = square root of variance

= √9.2983, √27.6927

= 3.0493, 5.2624

Please use attachment for better understanding

5 0
3 years ago
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