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4 years ago

Solve -2x squared minus 16x minus 44

Mathematics

2 answers:

Phantasy [73]4 years ago

6 0

Answer:

x=-4

Step-by-step explanation:

I would immediately reduce this by div. every term by -2:

x^2 + 8x + 22 = 0

Next, I'd "complete the square:"

x^2 + 8x + (4)^2 - (4)^2 + 22 = 0

(x + 4)^2 - 16 + 22 = 0, so that (x+4)^2 + 4 = 0.

Then sqrt( (x+4)^2 = sqrt(

x+4 = plus or minus i*2

x = -4 plus or minus i*2 (answer)

Anettt [7]4 years ago

3 0

Answer:

2(x^2-8x-22)

Step-by-step explanation:

factor 2 out of 2x^2-16x-44

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Please answer this fast in two minutes

Elden [556K]

Answer:

solution,

$- 2 = \frac{x - 17}{2} \: \\ - 2 \times 2 = x - 17 \\ - 4 = x - 17 \\ - x = - 17 + 4 \\ - x = - 13 \\ x = 13 \\ \\ 7 = \frac{y + 17}{2} \\ 14 = y + 17 \\ - y = 17 - 14 \\ - y = 3 \\ y = - 3$

Therefore,

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Hope this helps...

Good luck on your assignment..

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3 years ago

Read 2 more answers

Here are the instruction plz help asap

Mars2501 [29]

Answer:

again please don't just straight up copy it just use it as a base please also i tried my best and don't know if i got it right

Step-by-step explanation:

Part 2

Organize your data and find the rate of change.

I’m sorry i didn’t know how to make a table so i just did this

Person number 1- Left foot is 9 inches Forearm is 8.5 inches

Person number 2- Left foot is 7.5 inches Forearm is 7 inches

Person number 3- Left foot is 11 inches Forearm is 10.5 inches

Person number 4- Left foot: is 10 inches Forearm is 9.5 inches

Person number 5- Left foot is 6 inches Forearm is 5.5 inches

The rate of change equals y=x-0.5

I believe that it's a function because there is a relationship between 2 variables.

Part 3

Compare rates of change.

The equation below can be used to find the length of a foot or forearm when you know one or the other.

(length of the foot) = 0.860 • (length of the forearm) + 3.302

If you let y = length of the foot and x = length of the forearm, this equation can be simplified to

y = 0.860x + 3.302.

Using this equation, how long would the foot of a person be if his forearm was 17 inches long?

i don’t know how to type all my formulas and work so i'm just going to say the answer i got the rate of change = 0.86x or y=0.86x+3.302

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For Part A i got y=x-0.5 and that part A has the greater rate of change.

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Well, the values have to be different because there are different rates of change and different linear coefficients; and also each input value will result in a different output value because they all have different parameters as well.

Is the relation in your data a function? Why or why not? Could the equation in Part A represent a function? Why or why not? Explain your answer.

Yes, it is a function because each input from part A fits well together with the output on the other set, which matches the definition of a function.

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Ymorist [56]

Answer:

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Step-by-step explanation:

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mylen [45]

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