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Tanzania [10]
2 years ago
13

Factor the trinomial below.

Mathematics
2 answers:
Shtirlitz [24]2 years ago
8 0
Option C is your answer. 
BabaBlast [244]2 years ago
4 0
Hi there!

The answer is C.
{x}^{2} - 14x + 45 = (x - 9)(x - 5)

To find our answer we are looking for 2 integers. The sum of the integers must be -14 (since it must be equal to the number before the variable x). The product of both integers must be 45. Now we can conclude we are looking for the numbers -9 and -5.

- 9 + - 5 = - 9 - 5 = - 14 \\ - 9 \times - 5 = 45

(Remember that multiplying 2 negatives makes you end up with a positive.)

~ Hope this helps you!
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Assume that trees are subjected to different levels of carbon dioxide atmosphere with 7% of the trees in a minimal growth condit
taurus [48]

Answer: The mean and standard deviation are 567.2 and 89.88 resp.

Step-by-step explanation:

Since we have given that

For 370 parts per million = 7% = 0.07

For 440 parts per million = 10% = 0.10

For 550 parts per million = 49% = 0.49

For 670 parts per million = 34% = 0.34

So, Mean of the carbon dioxide atmosphere for these trees would be

E[x]=370\times 0.07+440\times 0.1+550\times 0.49+670\times 0.34=567.2

And

E[x^2]=370^2\times 0.07+440^2\times 0.1+550^2\times 0.49+670^2\times 0.34=329794

So, Variance would be

Var\ x=E[x^2]-E[x]^2=329794-567.2^2=8078.16

So, the standard deviation would be

\sigma=\sqrt{8078.16}=89.88

Hence, the mean and standard deviation are 567.2 and 89.88 resp.

3 0
3 years ago
Find f (0) and find x when f (x) =4
Anuta_ua [19.1K]
At x = 0, y-coordinate is at -4 so that means f(0) = -4

Now for f(x) = 4, we need to find any x-coordinates such that y-coordinates is 4.

There are two possible answer: x = -8 and x = 8

So x = -8, 8

Hope this helps.
4 0
3 years ago
Algebra 2 help needed image below
Nookie1986 [14]

Answer:

8x + 100

Step-by-step explanation:

Your answer is correct! But because the equation is already set to "y =", you do not need the "f(x)" in your equation.

7 0
1 year ago
What is the simplified form of the following expression?
Anna71 [15]

Answer:

i-

Step-by-stes 32 p explanation:

6 0
2 years ago
I need the answer please help me straight away!!!
Neko [114]

Answer:

15

Step-by-step explanation:

8 0
2 years ago
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