<span> I made a free points question u can enter any comments to win points wanna check it out here is the link:
brainly.com/question/7647844 </span>
Answer:
$180 was collected from Grade 9 students
Step-by-step explanation:
40% of 120 students is 48. This means that 48 students went. If half of these students paid half price, 24 students paid $2.50, and 24 students paid $5.00.
24 x 2.5 is 60
24 x 5 is 120
60 + 120 is 180, which is the total amount of money collected.
We are given : Zeros x=7 and x=4 and leading coefficent 1.
In order to find the quadratic function in standard form, we need to find the factors of quadratic function first and the multiply by given leading coefficent.
For the given zeros x=7 and x=4, we get the factors (x-7) and (x-4).
So, we need to multiply (x-7) and (x-4) by foil method.
We get
(x-7)(x-4) = x*x + x* -4 -7*x -7*-4
x^2 -4x -7x +28.
Combining like terms, we get
-4x-7x = -11x
x^2 -4x -7x +28 = x^2 -11x +28.
Now, we need to multiply x^2 -11x +28 quadratic by leading coefficent 1.
We get
1(x^2 -11x +28) = x^2 -11x +28.
Therefore, the required quadratic function in standard form is x^2 -11x +28.
I would but I can’t see the picture I don’t know why... what is the question please type it ,thank you
The expressions have the same expansion I'd say because the pairs 2 and 30, 3 and 20, and 4 and 15 because they are all equivalent to 60 because they are all factors of 60.
Same goes with the other pairs, because they are all equivalent to 48 because they are all factors of 48.