All categories

3 years ago

Write a quadratic function in standard form having zeros of -9 and -12

Mathematics

1 answer:

tia_tia [17]3 years ago

3 0

(x + 9)(x + 12) = 0
Expanding the brackets, we get:
$x^{2}+21x+108=0$

You might be interested in

Solve the following quadratic by

serious [3.7K]

Answer:

x = -2+- sqrt(6)

Step-by-step explanation:

Using completing the square, let x^2+4x-2 = 0 and solve the steps to get the answerx^2 + 4x - 2 =0

add 2 to both sides to get x^2 + 4x = 2

then add 4 to both sides to get x^2 + 4x + 4 = 6

Get the left hand side to the square formate: (x+2)^2 = 6

then simplify x+2 = sqrt(6) or x+2 = -sqrt(6)

so x = sqrt(6) - 2 or x = -sqrt(6) -2

5 0

2 years ago

How many ways can the words in d-r-a-g-o-n-f-l-y be arranged

GarryVolchara [31]

Answer:

362880 ways

Step-by-step explanation:

The word dragonfly has 9 different letters.

So, to find how many ways this word can be arranged, we just need to calculate the factorial of 9:

First letter has 9 possibilities

Second letter has 8 possibilities (one used)

Third letter has 7 possibilities (two used), and so on.

So the number of ways is:

9*8*7*6*5*4*3*2*1 = 362880 ways

7 0

3 years ago

Which statement is true about the function shown in the graph?

Ivenika [448]

Answer:

Function is slightly increasing

Step-by-step explanation:

PLATO

6 0

3 years ago

Sarah is going to invest $8,600 and leave it in an account for 16 years. Assuming the

jok3333 [9.3K]

Answer:

4.9%

Step-by-step explanation:

5 0

3 years ago

What is the value of

Alexxandr [17]

Answer:

The answer is 2.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers