Answer:
Option B is correct - this experiment has one factor (shampoo type), blocked by gender and whether the hair is dyed.
Step-by-step explanation:
The researcher desires to compare the effect of a new type of shampoo, he also has the opinion that men and women may react to the shampoo differently.
Furthermore, he believes that the shampoo will react differently to the hair that is dyed.
Therefore, this experiment has one factor(shampoo-type), blocked by gender and whether the hair is dyed.
Hence, option B is the correct option.
<u>Answer of question (1):</u>
The given speed = 12250 m/hr (meters per hour)
It is required to find speed in m/s (meter per second)
∵ one hour = 60 minutes = 3600 seconds
∴ speed = 12250 ÷ 3600 ≈ 3.4 m/sec (meter per second)
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<u>Answer of question (2):</u>
Distance = 75 km
Time = 15 hours
Average speed = Distance ÷ Time = 75 ÷ 15 = 5 km/hr (kilometer per hour)
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<u>Answer of question (3):</u>
Distance = 25 km
Time = 2.5 hours
Average speed = Distance ÷ Time = 25 ÷ 2.5 = 10 km/hr (kilometer per hour)
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<u>Answer of question (4):</u>
Speed = 800 km/hr
Distance = 4000 km
Time = Distance ÷ Speed = 4000 ÷ 800 = 5 hr.
Triangle abc and def are paralell
Answer:
15 ways
Step-by-step explanation:
There are 6 choices available for the first seat
There are 5 remaining choices for the second seat.
6(5) = 30 possible combinations
however, as the two seats are of equal power, the combination of AB is equal the the combination of BA etc, This eliminates half of the options.
5/100 or .05 would be the answers I believe.