Answer: 47
Step-by-step explanation:
Given : Margin of error :
Significance level :
Critical value :
The formula to find the sample size when no prior proportion exists is given by :-
i.e.
Hence, the minimum required sample size =47
Answer:
sin(R)=6/sqrt(97)
Step-by-step explanation:
Sine is opposite/hypotenuse
If you want to know what the angle is, Angle R= about 37.5
Hope this helps
Answer:
D. (-2,1)
Step-by-step explanation:
we have
This is the equation of a vertical parabola open upward The vertex represent a maximum
Convert the quadratic equation in vertex form
where
(h,k) is the vertex
Complete the square
Rewrite as perfect squares
The vertex is the point (-2,1)
Answer:
WHAT DOES BRAINLEST MEAN CAN SOMEONE TELL ME???
Step-by-step explanation:
Answer:
31m/s
Step-by-step explanation:
Using the equation of motion
v² = u² + 2gH
H is the height of fall = 49m
g is the acceleration due to gravity = 9.8m/s²
u is the initial velocity = 0m/s
v² = 0² + 2(9.8)(49)
v² = 960.4
v = √960.4
v = 30.9m/s
v ≈ 31m/s
Hence the velocity of water at the turbine is 31m/s