A random variable is normally distributed with a mean of 25 and a standard deviation of 5. if an observation is randomly selecte
1 answer:
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a)
b)
c)
d)
- at least one is spoilt
- none is spoilt
We calculated in a).
Therefore
Answer: Length = 15, Width = 12
Step-by-step explanation:
L = length
W = width
L = W+ 3
perimeter = 2L + 2W
54 = 2(W+3) + 2W
54 = 2W + 6 + 2W
54 = 4W + 6
54 - 6 = 4W
48 = 4W
W =
W = 12
now to find the length, plug the width into the equation L = W + 3
length:
L = W+3
L=12 +3
L = 15