(a) 4
(b) y = sqrt(9 - (9/16)x^2)
The best guess to the formula using knowledge of the general formula for an ellipse is:
x^2/16 + y^2/9 = 1
(a). An ellipse is reflectively symmetrical across both the major and minor axis. So if you can get the area of the ellipse in a quadrant, then multiplying that area by 4 would give the total area of the ellipse. So the factor of 4 is correct.
(b). The general equation for an ellipse is not suitable for a general function since it returns 2 y values for every x value. But if we restrict ourselves to just the positive value of a square root, that problem is easy to solve. So let's do so:
x^2/16 + y^2/9 = 1
x^2/16 + y^2/9 - 1 = 0
x^2/16 - 1 = - y^2/9
-(9/16)x^2 + 9 = y^2
9 - (9/16)x^2 = y^2
sqrt(9 - (9/16)x^2) = y
y = sqrt(9 - (9/16)x^2)
Pittsburgh because -9°F is colder than -7<span>°F</span>
The original price of the dress was $200. This is because 20% of 200 is $40 which was the price after the discount.
Hope this helps :>
the answer is b shift 2 cause the mean of shift to equals 40.4
Answer:
$468.75
Step-by-step explanation:
52 packages = $195
125 packages = ?
125 x (195/52)
= 125 x 3.75
= 468.75
