Which equation has the components of 0 = x2 – 9x – 20 inserted into the quadratic formula correctly? x = startfraction negative 9 plus or minus startroot (negative 9) squared minus 4(1)(negative 20) endroot over 2(1) endfraction x = startfraction 9 plus or minus startroot (negative 9) squared minus 4(1)(20) endroot over 2(1) endfraction x = startfraction 9 plus or minus startroot (negative 9) squared minus 4(1)(negative 20) endroot over 2(1) endfraction x = startfraction negative 9 plus or minus startroot (negative 9) squared + 4(1)(negative 20) endroot over 2(1) endfraction

Step-by-step explanation:

Recall that the quadratic formula gives you the pattern to follow in order to find the solutions to a quadratic equation of the form:

It tells us that we need to use the parameters and in the following formula in order to get the answers for the x-values that solve it:

so, in our case, , , and

then, replacing these values in the formula, we obtain:

Which looks like the third expression you are listing (although it is a little hard to read)

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

answer: y = 3/2 x - 3

y = 1/8 x - 3/4 that would be your correct option

step-by-step explanation: w