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2 years ago

Does this graph represent a function? Why or why not?

Mathematics

1 answer:

RoseWind [281]2 years ago

6 0

Answer:

Step-by-step explanation:

There are no two points on the same line so the answer is D

I hope this is right!

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Given that f(x) = 19x2 + 152, solve the equation f(x) = 0

telo118 [61]

Option A

The solution is:

$x = \pm 2i \sqrt{2}$

Solution:

$f(x) = 19x^2+152$

We have to solve the equation f(x) = 0

Let f(x) = 0

$0=19x^2+152$

Solve the above equation

$19x^2 + 152 = 0$

$\mathrm{Subtract\:}152\mathrm{\:from\:both\:sides}\\\\19x^2+152-152=0-152\\\\Simplify\ the\ above\ equation\\\\19x^2 = -152\\\\\mathrm{Divide\:both\:sides\:by\:}19\\\\\frac{19x^2}{19} = \frac{-152}{19}\\\\x^2 = -8$

Take square root on both sides

$x = \pm \sqrt{-8}\\\\x = \pm \sqrt{-1}\sqrt{8}\\\\\mathrm{Apply\:imaginary\:number\:rule}:\quad \sqrt{-1}=i\\\\x = \pm i\sqrt{8}\\\\x = \pm i \sqrt{2 \times 2 \times 2}\\\\x = \pm 2i\sqrt{2}$

Thus the solution is found

5 0

2 years ago

Please help I literally don't understand-

Ivenika [448]

Well, QR is the hypotenuse of the triangle and PT is another side of the triangle. You can use phythagoras theorem to work this out. So squareroot 13-8. That should give your your answer

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2 years ago

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How to change a number ten by rounding

Llana [10]

10 is already rounded

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2 years ago

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Please help check picture to see question (no guessing) (please explain)

Nina [5.8K]

-4 is the answer to the Questor

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2 years ago

What is the value of x? Enter your answer in the box. x =

nydimaria [60]

in such cases where 2 line intersect each other, opposite angels are equal

2x+2 = 3x - 52

now subtracting 2 from both side

2x +2 -2 = 3x - 52 - 2

2x = 3x - 54

subtracting 3x from both side

2x -3x = 3x -54 - 3x

-x = -54

drividing by -1 both side

-x/-1 = -54/-1

x = 54

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2 years ago