You must remember that a polynomial is written like so...
ax^2 + bx + c
In this case...
a = 1
b = 3
c = -10
To factor you must find two numbers who both add up to b (3) AND multiply to c (-10)
-2 + 5 = 3
-2 * 5 = -10
so...
(x - 2)(x + 5)
To find the zero you must set each factor equal to zero and solve for for x like so...
x - 2 = 0
x = 2
x + 5 = 0
x = -5
Hope this helped!
~Just a girl in love with Shawn Mendes
Answer:
i beilive (a) is c idk i could be wrong..
Step-by-step explanation:
Answer:
8
Step-by-step explanation:
We could rearange the equation to for it to be 3 - (-5) = ? In this case we would add to get our missing number. Which would be 3+5=8. That is how we get 8 as our final answer and the answer for the blank.
9514 1404 393
Answer:
350,000
Step-by-step explanation:
The vertex of the quadratic ax²+bx+c is located at x=-b/(2a). For the given profit function, the number of units (x) that will produce maximum profit is ...
x = -(140)/(2(-0.0002)) = 1,400,000/4
x = 350,000
350,000 units should be sold to maximize profit.
if 71 paying passengers are all children, they should pay 5* 71= $355 in total.
$439 is paid so adults pay $439-$355 = $84 more than money paid by same number of children.
each adult pays $8-$5=$3 more than each child
so there are $84/$3= 28adults
and 71-28= 43 children
