Answer:
A)They most likely used an experiment with students randomly assigned to watch more than one hour or less than one hour of TV each night.
Step-by-step explanation:
For the study, the likely design to have been used is the experimental.
It would be expected that random selection of students would be made, and they would be assigned to the two groups - those who watch more than one hour of TV each night and those who watch less than one hour. Their initial weights measured, and the study is for a period of time.
After the period, the weight of each student is remeasured and compared to their initial weight. Then the conclusion can be made.
Thus, they most likely used an experiment with students randomly assigned to watch more than one hour or less than one hour of TV each night.
Answer:
In 50 years the amount will be $ 2000.
Step-by-step explanation:
Tiana deposited $500 into a account at 6 % simple interest per Year .
Therefore, Principal (P) is $500
Amount (Principal + Interest) = $2000
Interest (I) = $2000 - $500 = $1500
Rate percentage (R) = 6% per Year
Let, The time be T years
Now, I =
Or, T =
Or, T = (100×1500 ) ÷ ( 500× 6 )
<em> </em><em>∴ T = 50 Years</em>
.006, hope that helps, multiplying or dividing by ten you can just move the decimal point
For a problem of this nature, we need to assume that the base of the observation tower is at the same elevation as the fire. The tangent of the angle is the ratio of tower height to horizontal distance:
tan(α) = (tower height)/(horizontal distance)
Rearranging this equation, we have
(horizontal distance) = (tower height)/tan(α)
Putting in the given values gives
(horizontal distance) = (90 ft)/tan(7°) ≈ 733 ft
I believe that c, d and f are right