Answer:
He did not multiply 3 by the fraction 5/3.
Step-by-step explanation:
8/3=3c + 18/3
Answer:
Ss the correct asnwers is:
(0,20) ; y = (x²/80) + 20
Step-by-step explanation:
Given that:
Shape of the satellite dish = parabola
Focus of the satellite dish = 40ft above the ground
Let the point on ground be (0,0)
Let the point of Focus be (0,40)
Base is at equal distance from the ground and the focus that is the vertex is at (h,k) = (0,20)
Equation of satellite can be obtained as:
(x - h)² = 4a(y - k)
as (h,k) = (0,20) , a=20
(x - 0)² = 4(20)(y - 20)
x² = 80( y - 20)
x² = 80y - 1600
y = (x²/80) + 20
Answer: 76.35in²
Step-by-step explanation:
Circumference of a circle = 2πr or πd , while area is πr².
To find the area we must first of all find the radius if the circle using any of the formula above.we then equate 31 to 2πr and then solve for r.
31 = 2πr , where π = 3.142 or 22/7
r = 31/2 x 3.142
= 31 /6.284
= 4.93in
To find the area, substitute for r in the formula above,
Area = πr²
= 3.142 x 4.93²
= 3.142 x 24.30
= 76.35in².
Answer:
The law of large numbers, in probability and statistics, states that as a sample size grows, its mean gets closer to the average of the whole population.
Step-by-step explanation:
In business or at work, the term "law of large numbers" is sometimes used in a different sense to express the relationship between scale and growth rates.
I hope I helped you^^ !