Answer:
Step-by-step explanation:
We are given that
Angle of incidence,i=37.5 degree
We have to find the angle of refraction into the water made by ray wit the normal to the surface.
Refractive index of water,
By Snell's law
Again for glass water surface
Using Snell's law
Angle of incidence,i'=22.83 degree
I know angle DAB is 20 since it'a an indicated angle and I'm not sure about any of the other ones sorry.
Answer: B.
Step-by-step explanation: The probability that a student is 15 years old includes those who are only 15: 450 students. This means that of 1,500 there are 450 students who are 15. The probability is set up as: 450/1,500 or 0.30.
Answer:
n= 37 -8n
the first n is the end result, the second in the equation is the __ number, the nth number
Step-by-step explanation:
Answer:
Step-by-step explanation:
because The curve C crosses the x-axis at the origin and at the points A and B => the x coordinates of A and B are the solution of the equation:
x(x + 4)(x - 2) = 0
<=> x = 0
x = -4
x = 2
because the x-coordinates of the points A and B aren't 0 and the x-coordinate
of A is a negative value
=> the x-coordinate of A is -4
the x-coordinate of B is 2
