The equation f(x) = 5x2 − 30x + 6 represents a parabola. what is the vertex of the parabola?

(−5, 281)
(5, −19)
(−3, 141)
(3, −39)

D.

Step-by-step explanation:

We have been given an equation . We are asked to find the vertex of parabola for our given equation.

We will use formula to find the x-coordinate of the vertex of parabola, then we will substitute the value of x-coordinate in our equation to find the y-coordinate of the parabola.

Therefore, the x-coordinate of the vertex of the parabola is 3.

Now let us substitute in our given equation to find the y-coordinate of the parabola.

So, the y-coordinate of the vertex of parabola is . The point represents the vertex of the parabola represented by our given equation and option D is the correct choice.

c

step-by-step explanation:

it isn't d, because the interquartile range is from 27-57. and the interquartile range is basically half the data, it's pretty obvious.

it isn't b, because like i said earlier, the interquartile range is from 27-57. 57-27 is 30. the real range has to be longer

not a either. although it looks like it, 3/4 of the data is not greater than 27. but if c is wrong than this should be correct

the correct answer is c, because 13 is the point in which the plot starts

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies