First you find the median, the middle term (if there are an even number of terms it is the average of the middle two terms.) Since you have 21 terms, odd, you just use the middle term, in this case 8. The first quartile works the same way, but just on the left half between the start and the median...so the first quartile is 6.
Answer:
- c) 62.5 mA
- c) 9 seconds
Step-by-step explanation:
1. resistance is multiplied by 20/5 = 4, so current is multiplied by 1/4.
(1/4)(250 mA) = 62.5 mA . . . . matches choice C
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2. distance is multiplied by 144/16 = 9, so time is multiplied by √9 = 3. The time it takes to fall 9 times as far is ...
3 × 3 seconds = 9 seconds . . . . matches choice C
Answer: Your answer is correct.
Explanation:
Use the marker gradations to identify the projected geometric shapes from the top, front and right side view as shown in the figure below.
All the gradation markings agree with your choice.
.
Since BD is the perpendicular bisector of AC, then AB = BD, so:
6x = x+15
5x=15
x=3
CB = 3+15 = 18
18
x=30
y=90
90 ÷ 30 =3
y=3x
3 × 6 = 18