When you plot the given points on a coordinate plane, you can see this is an ellipse that is vertical. The equation for this is
. Of the values a and b, a is always greater than b, so it is on our major axis, the y-axis (it's under the y-k). a is the distance from the center to the vertices. When you plotted those given points, you can see that point dead center between the foci and the vertices is the origin (0, 0). That gives us our h and k values of 0 and 0. a is the number of units from the h coordinate of 0 to the y coordinate of the vertex, so a = 12. c is the number of units from the center to the foci, so c = 11. We need to find b now using the formula for the foci which is
. We have c and a, so
and
. Now we have all the info we need to rewrite the equation:
or, simplified,
The correct it is b this I hope this helps you
Answer:
Sale Price = $24 (answer). This means the cost of the item to you is $24. You will pay $24 for a item with original price of $120 when discounted 80%.
Step-by-step explanation:
Answer:
67
Step-by-step explanation:
123£
Answer:8 and 12
Step-by-step explanation: 8 is 4 less than 12 and 12 and 8 equals 20