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3 years ago

Write a quadratic function f whose zeros are -2 and -9

Mathematics

2 answers:

IgorLugansk [536]3 years ago

7 0

Can you restate the question more better to help you ?

olchik [2.2K]3 years ago

6 0

Answer:

f(x) = x^2 + 11x + 18.

Step-by-step explanation:

As the zeroes are -2 and -9 the factored form is

f(x) = a(x - (-2))(x - (-9)) where a is some constant.

As we want any quadratic function with theses zeros we can let a = 1 so:

f(x) = (x + 2)(x + 9)

f(x) = x^2 + 2x + 9x + 18

f(x) = x^2 + 11x + 18.

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suppose you create a graph of the cost function, c=20n + 500 of a new bookstore, and you also graph the revenue function, r=25n,

sdas [7]

Answer:

Loss section

Step-by-step explanation:

Given

$c = 20n + 500$ -- cost

$r = 25n$ -- revenue

Required

Determine where n = 150 is

To do this, we substitute 150 for n in the given functions

$c = 20n + 500$

$c = 20 * 150 + 500$

$c = 3500$

$r = 25n$

$r = 25 * 150$

$r = 3750$

The above shows that the revenue is greater than cost for n = 150.

This implies that, n = 15o is the loss section.

6 0

2 years ago

Read 2 more answers

Use distributive property to rewrite 10(5+14-3)

Allisa [31]

(10x5)+(10x14)+(10x-3)
50+140-30
160

7 0

3 years ago

Find the slope of the line that contains these two points.<br> (2, -5) and (7, -10)

Paul [167]

M= $\frac{y1-y2}{x1-x2}$ = $\frac{-5-(-10)}{2-7}$ = $\frac{5}{-5} =-1$
Answer: slope is -1

4 0

2 years ago

Read 2 more answers

Ms. Figgs asked 25 students in her 7th-grade homeroom to select their favorite cookie. The results are recorded in the table bel

Artist 52 [7]

Step-by-step explanation:

Can you show a picture of the table, I can't help if I don't see the whole problem

8 0

2 years ago

Uche is a cartographer. He picks a scale to fit a map of India onto a page of an atlas. The page is 121212 by 121212 inches, wit

julsineya [31]

The scale ratio of a point A to another point B is the division of the length of B by the length of A. The best equation that models the situation is: $10.5k= 3214$

The page dimension is:

$Length = 12$

$Width = 12$

The length and the width of Uche's book are equal; this means the pages of Uche's book have the shape of a square

The margin of 0.75 on either sided means the usable dimension is:

$Length = 12 - 2 * 0.75 =10.5$

The dimension of India is:

$Length = 3214$

$Width =2933$

The longest side in India's dimension is:

$Longest = 3214$

From Uche's book, the longest dimension is:

$Longest = 10.5$

So, the scale equation is:

k * longest length of Uche's book = longest side of India

This gives:

$k * 10.5 =3214$

$10.5k =3214$