The equation of ellipse is x²/a² + y²/b² = 1, it can be written as
y =sqrt (b² - <span> (b²/a²) x²), so it is a function </span>
Step-by-step explanation:
area of the triangle
1/2xbxh
1/2(12x9)
1/2(108)
area of triangle is 54in²
area of rectangle
2(L+W)
2(15+6)
2(21)
area of rectangle is 42in²
Total area is 96in²
Answer:
63
Step-by-step explanation:
multiply 7 by 18 7 × 18=126 then divide by 2 126÷2=63
I the average score is 750 and standard deviation ( sigma ) is 50 points, then score 700 - 800 is between (750 - 1 sigma) and (750 + 1 sigma).
That is 34.1 % + 34.1 % = 68.2 % of the whole population.
2,000 · 0.682 = 1.364
We expect 1,364 students to score between 700 and 800 points.
