2. What decimal equals seven hundred forty-six thousandths?
2 answers:
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Answer:
0.6
Step-by-step explanation:
Given: Mean= $750
Standard deviation= $60
First, lets find out z-score of the interval between $624 and $768.
z score=
z score=
∴ z score for $624 is -2.1
Now, finding z score for $768
Z score=
∴ z score for $768 is 0.3
As per the z score table, the value for -2.1 is 0.0179 and for 0.3 is 0.6179
Now, subtracting the value to get proportion
∴ There are 0.6 proportion of laptops are in the range of $624 and $768
Answer:
0.002 mg of sample will be left after 40 days.
Step-by-step explanation:
Half life of the iodine-131 == 8 days
Initial amount of iodine-131 == 64 milligrams = 0.064 g
Amount of iodine-131 left after the time of 40 days = N
Decay constant = = ?
N = 0.002004 g = 0.002 mg
0.002 mg of sample will be left after 40 days.