a busuness center had 36 desktop computers and 54 laptops computer, what Percent of the computers are laptop computers
1 answer:
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Answer:
Step-by-step explanation:
Given that X the time to complete a standardized exam in the BYU-Idaho Testing Center is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes.
We have 68 rule as 2/3 of total would lie within 1 std deviation, and 95 rule as nearly 95% lie within 2 std deviations from the mean.
We have std deviation = 10
Hence 2 std deviations from the mean
= Mean ±2 std deviations
=±20
=
Below 50, 0.25 or 2.5% would complete the exam.
Answer:
-1/2
Step-by-step explanation:
Given:
Find the common denominator for the fractions, which is 6. Rewrite 1/3 as 2/6.
Combine like terms.
Simplify.
-0.5x = 1/4
Divide both sides by -0.5.
x = -1/2 = -0.5
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