1/2(5 sqrt 2)(4 sqrt 2)= 20
Answer:
The standard error of the mean = 5.14 mins
Step-by-step explanation:
Number of random sample (n) = 20
Mean(X) = 31.25 mins
Standard deviation (α) = 23.7 mins
Standard error of mean =
standard deviation / √sample size
= 23.7/√20
= 23.7/4.4721
= 5.14 mins
-12x+3 greater than or equal to 5
-12x greater than or equal to to 2
To turn the negative sign of -12x into positive, we multiply both sides by minus, which shifts the inequality sign.
So, 12x less than or equal to 2
x is less than or equal to 1/6
Therefore, 0, -1, -3, -4 and -6 satisfy this inequality.
23 Pennie’s is the answer I believe
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Given information
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It is a cube
Length = 6.2 ft
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Find one surface
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6.2 x 6.2 = 38.44 ft²
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Find all 6 surfaces
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38.44 x 6 = 230.64 ft²
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Answer: 230.64 ft²
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