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andreyandreev [35.5K]
3 years ago
10

I need to knowww nowwwww

Mathematics
1 answer:
mars1129 [50]3 years ago
6 0

Answer:

Stephanie.

Step-by-step explanation:

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Suppose the graph of a cubic polynomial function has the same zeroes and passes through the coordinate (0, -5). Write the equati
amid [387]
In this we know all three zeros and one point from which the graph pass.
So we will let specific cubic polynomial function of the form
f(x) = a(x - x_1)(x-x_2)(x-x_3)

As we know zeros are that point where we will get value of function equal to zero. So it is basically in form (x_n , 0)

SO in given question zeros are (2 , 0) , (3, 0) and (5,0)
So we can say x_1 = 2 , x_2 = 3 , x_3 = 5

So required equation is
f(x) = a (x-2)(x-3)(x-5)
              = a[(x^2 - 2x - 3x + 6)(x-5)]
              = a[(x^2 - 5x+6)(x-5)]
              = a(x^3 - 5x^2 + 6x- 5x^2 + 25x - 30)
              = a(x^3 - 10x^2+31x-30)
Now we have one point (0 , -5) from which graph passes.
So we say at x = 0 , f(x) = -5
-5= a (0-0+0 - 30)
-5 = -30a
a =  \frac{-5}{-30} =  \frac{1}{6}
So required equation of cubic polynomial is
f(x) =  \frac{1}{6}(x^3 -10x^2+31x-30)

For finding y - intercept we simply plugin x = 0 in given equation.
As we know at x = 0 , value of function is -5.
So y - intercept is -5.
4 0
3 years ago
Read 2 more answers
The dot plot above identifies the number of pets living with each of 20 families in an apartment building. What fraction of the
ludmilkaskok [199]

Step-by-step explanation:

refer the above attachment

5 0
2 years ago
At a store, customers are randomly selected to participate in a survey. On Friday, there were 500 customers at the store. Out of
Svetlanka [38]
Divide the number of people selected by the total number of people.

90/500 = .18

This means that 18% of the customers were selected for the survey.

If the probability is the same on Saturday, then we can multiply the expected customers by our .18

700 x .18 = 126

126 should be selected for the survey on Saturday.
7 0
3 years ago
If r(x) = 2 – x2 and w(x) = x – 2, what is the range of (w circle r) (x)?
shutvik [7]

Answer:

Try (

−

∞

,

∞

)

Step-by-step explanation:

OK so, I copied and pasted that so try to put it together lol

7 0
3 years ago
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What is 27 Divided by 15
lozanna [386]
27 divided by 15 is 1.8, so that should be the correct answer.
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