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weeeeeb [17]
3 years ago
9

PLEASE help on math! One questioin

Mathematics
1 answer:
Yuki888 [10]3 years ago
6 0

Using the polynomial remainder theorem you divide the polynomial by a linear polynomial given as x-r, where r is the value of f(x)

You are given the value of f(x) as 4.

So now you have:

x^4 -2x^3+5x^2 -20x-4 / x-4

Divide  

= x^3 +2x^2 +13x +32 +124/x-4


The remainder is the number above the x-4, which is 124.


f(4) = 124


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kari74 [83]

Answer:

Yes, she passes with 80%

Step-by-step explanation:

4 divided by 5 = 0.8

0.8 multiplied by 100 = 80%

80% is greater than the required 75% needed to pass

5 0
2 years ago
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a student walks 8 steps east 6 steps northeast 9 steps north west what is her displacement? include magnitude and direction
kati45 [8]

The displacement is 18.03 steps, and the direction is 47.25°

<h3>How to get the displacement?</h3>

We know that displacement is the difference between the final position and the initial position.

We assume the initial position (0, 0). Let's define the positive x-axis as the east and the positive y-axis as the north.

First, the student moves 8 steps east, so she is at:

(0 + 8, 0)

Then she moves 6 steps northeast, so the new position is:

(6*cos(45°) + 8,  6*cos(45°))

Finally, she moves 9 steps due north, so we have:

(6*cos(45°) + 8,  6*cos(45°) + 9)

Then the final position is:

(12.24, 13.24)

So the displacement is:

D = (12.24, 13.24) - (0, 0) =  (12.24, 13.24)

The magnitude of the displacement is:

|D| = \sqrt{12.24^2 + 13.24^2} = 18.03

So the magnitude is 18.03 steps.

And the direction is given by the arctangent of the quotient between the y-component and the x-component:

\theta = Arctg(13.24/12.24) = 47.25 \°

If you want to learn more about displacements:

brainly.com/question/4931057

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8 0
2 years ago
Need the answer in 20 min !! Ty
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Answer:

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Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:

2. -22 - 4x = 12

add 22 on both side

-22+22-4x=12+22

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divide both side by -4

-4x/-4=36/-4

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oksano4ka [1.4K]
She could travel 15 miles in an hour
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