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2 years ago

PLZ HELP!! Which real numbers are zeroes of the function?

Mathematics

1 answer:

astra-53 [7]2 years ago

5 0

The correct answers are: 1/2, 2 and -2.

To get this, factor f(x)

f(x)=2x^3-x^2-8x+4

f(x)= (2x^3-x^2) - (8x -4)

f(x)= (2x-1)(x^2) + (2x-1)(-4)

f(x)= (2x-1)(x^2-4)

f(x)= (2x-1)(x-2)(x+2)

2x-1=0

2x=1

x=1/2

x-2=0

x=2

x+2=0

x=-2

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PLEASE HELP ME!!!!!

Irina18 [472]

Answer:

f(6) = 1

Step-by-step explanation:

Function:

f(x) = -2/3x + 5

f(6) = -2/3(6) + 5

f(6) = -4 + 5

f(6) = 1

4 0

2 years ago

Read 2 more answers

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Vedmedyk [2.9K]

Answer:

Track 2

Step-by-step explanation:

180 degrees would turn the train completely around so if it entered on track 2 then it left on track 2

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2 years ago

What is the value of x in this figure?

8090 [49]

This is a 45-45-90 triangle and the ratios of the sides are 1 : 1 : sqrt2 where sqrt2 is the length of the hypotenuse ( longest side)

So the measure of x = 12 sqrt2 which is the first choice.

4 0

2 years ago

To get an A in a course, you must have an average of at least 90% on four tests worth 100 points each. Your scores so far are 85

kondaur [170]

Answer:

A score of 117 is needed, which Is not possible since the test is over 100.

Step-by-step explanation:

The other 3 scores are 85, 94,84 . Let's x be the 4th score he must score.

Therefore ( 85 + 94 + 84 + X)/4 =95

Then 263+X /4 =95

Cross mutiplying 4*95=263+X

Therefore X= 380-263

X= 117 which is not possible since the test score is over 100.

6 0

2 years ago

Solve. −3.5=−4.6x−5.1 Enter your answer as a fraction in simplest form in the box.

Law Incorporation [45]

Answer:

x = 8/23

Step-by-step explanation:

Adding 3.5 to each side

-3.5 + 3.5 = -4.6x - 5.1 + 3.5
-4.6x - 1.6 = 0

Adding 4.6x to each side

-4.6x - 1.6 + 4.6x = 0 + 4.6x
4.6x = -1.6

Dividing each side by 4.6

4.6x/4.6 = -1.6/4.6
x = 8/23

7 0

1 year ago