Answer:
Step-by-step explanation:
H = V/ pie r^2
H = 
R= 5 because the radius is half the diameter
Pies cancel out leaving you with:
H = 2200/5^2
H = 2200/25
H = 88
Hope this helps :)
Answer:
A = 15u²
Step-by-step explanation:
Area of a Trapezoid Formula:
Plug in our values (h = 3, b1 = 7, b2 = 3)
Now we evaluate
Answer:
Percentage of balls which are red = 80%.
Step-by-step explanation:
Let the probability of drawing a red ball be x then the probability of drawing a white ball is 1-x.
There are 5C3 = 10 ways of getting 3 reds in 5 draws so the probability of this is 10* x^3 * (1 - x)^2.
The probability of getting 1 red in 5 draws = 5C1 * x (1-x)^4.
The first probability is 32 times the last.
So we have the equation:
10x^3(1 - x)^2 / 5x(1 - x)^4 = 32
2x^2 / (1 - x)^2 = 32
2x^2 = 32(1 -x)^2
2x^2 = 32( 1 - 2x + x^2)
2x^2 = 32 - 64x + 32x^2
30x^2 - 64x + 32 = 0
15x^2 - 32x + 16 = 0
(5x - 4)(3x - 4) = 0
x = 0.8, 1.333...
The probability must be < 1 so x = 0.8 = 80%.
Answer:
The third answeer
Step-by-step explanation:
Also nice talk
The answer I got was 360*10=6300
