What are the vertices of the hyperbola whose equation is - (y+6)^2/81-(x+8)^2/49=1

The answer would be C, (-8, -15) and (-8, 3)

Sorry about no explanation

(-8,3) and (-8,-15)

Step-by-step explanation:

the distance from the center to one of the vertices is the value of "a"

and in this equation, "a" is under the y term making "a" = square root of 81,

which is 9. Now we need to find the center, the center of a hyperbola is (h,k)

h is subtracted from x, while k is subtracted from y. therefore the center is (-8,-6). Since the y term is first the transverse axis is vertical.

So 9 y units from (-8,-6) is (-8,3), and (-8,-15)

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.