Answer:
2
Step-by-step explanation:
-- Do the measurement first.
Express the result in any unit you feel like.
-- If the number turns out to be inconveniently large or small
using that unit, then convert the measurement to a different
unit that produces a more convenient number.
Examples:
-- Measure the length of your kitchen, in miles.
Result: My kitchen is 0.00227 mile long.
Inconvenient number !
Convert it to millimeters.
Result: My kitchen is 3,658 millimeters long.
Inconvenient number !
Convert it to feet.
My kitchen is 12 feet long.
Convenient number !
Easy to say, write down, remember, and tell other people.
-- Measure the distance to the moon, in nanometers.
The moon is 383,023,872,000,000,000 nanometers away from Earth.
Inconvenient number !
Convert it to light-years.
The moon is 0.0000000405 of a light year away from Earth.
Inconvenient number !
Convert it to inches.
The moon is 15,079,680,000 inches away from Earth.
Inconvenient number !
Convert it to feet.
The moon is 1,256,640,000 feet from Earth.
Better, but still not too convenient.
Convert it to miles.
The moon is 238,000 miles away from Earth.
Probably the best we can get. Still ugly, but we're running out of units.
Try AU (Astronomical Unit, the average distance of the Earth from the Sun)
The moon is 0.00256 AU away from Earth.
Answer:
They stopped for lunch at 12:25 pm.
Step-by-step explanation:
They started skyiing at 10:30 am.
They skied for 1 hour and 55 minutes.
1 hour and 55 minutes is 5 minutes less than 2 hours.
2 hours after 10:30 am is 12:30 pm.
Taking the 5 minutes, we have 12:25 pm
They stopped for lunch at 12:25 pm.
Answer:
Upper limit 150
Lower bond 136
Step-by-step explanation:
Hello!
The study variable is:
X: measurement of IQ of a statistic instructor.
This variable has a normal distribution:
X~N(μ; σ²)
And the population standard deviation is known σ= 16
You need to construct a confidence interval for the population mean, for this, since the variable has a normal distribution and the population variance is known, the statistic to use is the standard normal
Z= X[bar] - μ ~N(0;1)
σ/√n
The formula for the interval is:
X[bar] ± *
Where
X[bar] is the sample mean
is the value under the Z distribution for the corresponding confidence level.
S is the population standard deviation. (should be sigma but it doesn't recognize the symbol)
[143 ± 1.96 * ]
[135,988; 150. 012] ≅ [136; 150]
I hope it helps!
Answer:
Step-by-step explanation:
3t + 2 < 7 OR −4t + 5 < 1
- 2 - 2 - 5 - 5
___________________
**Whenever you divide\multiply by a <em>negative</em><em> </em><em>integer</em>, you reverse the inequality symbol given to you <em>initially</em>.
<u>Extended</u><u> </u><u>Information</u><u> </u><u>on</u><u> </u><u>Inequalities</u>
≤, ≥ [dark circle with a dark line (<em>brackets</em><em> </em>when writing in <em>Interval</em><em> </em><em>Notation</em>)]
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<em>As</em><em> </em><em>you</em><em> </em><em>can see</em><em> </em><em>in</em><em> </em><em>the</em><em> </em><em>above</em><em> </em><em>graph</em><em>,</em><em> </em><em>the</em><em> </em><em>graph</em><em> </em><em>is</em><em> </em><em>connected</em><em> </em><em>ALTOGETHER</em><em>.</em><em> </em><em>Be</em><em> </em><em>aware</em><em> </em><em>that</em><em> </em><em>this</em><em> </em><em>will</em><em> </em><em>not</em><em> </em><em>ALWAYS</em><em> </em><em>be</em><em> </em><em>the</em><em> </em><em>case</em><em> </em><em>because</em><em> </em><em>a</em><em> </em><em>majourity</em><em> </em><em>of</em><em> </em><em>these</em><em> </em><em>graphs</em><em> </em><em>are</em><em> </em><em>seperated</em><em>,</em><em> </em><em>pointing</em><em> </em><em>in</em><em> </em><em>OPPOSITE</em><em> </em>directions.