Input Output 8 2 11 5 15 9 17 ? What is the output if the input is 17? A. 11 B. 14 C. 15 D. 16

The correct answer is A. Explanation Each output equals the input minus 6: $output = input - 6$. For 8: $8 - 6 = 2$ For 11: $11 - 6 = 5$ For 15: $15 - 6 = 9$ So for 17: $17 - 6 = 11$, which is option A.

The correct answer is: $67\text{ in}$ Explanation You convert feet to inches (1 ft = 12 in), then add the extra inches. Steps: Convert feet to inches: $$5\times12=60\text{ in}$$ Add the remaining inches: $$60+7=67\text{ in}$$ Therefore, 5 ft 7 in = $67\text{ in}$.

4 thousands 7 hundreds 47

The correct answer is: $4,747$ Explanation We convert each place value to its numeric value and add them: 4 thousands = 4000, 7 hundreds = 700, and 47 is 47. Steps: First step: $4\text{ thousands}=4\times1000=4000$ Second step: $7\text{ hundreds}=7\times100=700$ Third step: $47=47$ Final step: $4000+700+47=4747$ Therefore, "4 thousands 7 hundreds 47" equals $4,747$.

The correct answer is: $2500\text{ mcg}$ Explanation Know the conversion: $1\text{ mg} = 1000\text{ mcg}$. Multiply: $2.5\text{ mg} \times 1000 = 2500\text{ mcg}$. Therefore, $2.5\text{ mg} = 2500\text{ mcg}$.

How many Micrograms in a Milligram

The correct answer is: $1000\ \mu\text{g}$ Explanation A milligram (mg) is $10^{-3}$ grams and a microgram ($\mu$g) is $10^{-6}$ grams, so a milligram is 1000 times larger than a microgram. Steps: $$1\ \text{mg}=10^{-3}\ \text{g}$$ $$1\ \mu\text{g}=10^{-6}\ \text{g}$$ $$\frac{1\ \text{mg}}{1\ \mu\text{g}}=\frac{10^{-3}}{10^{-6}}=10^{3}=1000$$ Therefore, $1\ \text{mg}=1000\ \mu\text{g}$.

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How Many Seconds in Hour

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How Many Seconds in Hour

Q: How Many Seconds in Hour

The correct answer is: $3600$ Explanation One minute has $60$ seconds and one hour has $60$ minutes, so multiply the two to get seconds per hour. Steps: One minute: $1\text{ min}=60\text{ s}$ One hour: $1\text{ h}=60\text{ min}$ Multiply: $$60\text{ s/min}\times60\text{ min/h}=3600\text{ s/h}$$ Therefore, there are 3600 seconds in one hour.