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Elina [12.6K]
3 years ago
6

Please can someone answer this.

Mathematics
1 answer:
ivanzaharov [21]3 years ago
7 0

Answer:

  •  x = -4, x = 0, x = 1

Step-by-step explanation:

x is a factor of all terms, so x=0 is a zero. (Eliminates choices 1 and 5.)

The sum of coefficients is 0, so x=1 is a zero. (Eliminates choices 3 and 4.)

Reversing the sign of the odd-degree terms gives signs of -++, so there is one sign change, hence one negative real root (by Descartes' rule of signs). This confirms choice 2 as the answer.

___

Of course, your graphing calculator can answer this almost as quickly.

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I can’t figure out what the half circle means the answer options are 163,129,149 and 186
vodka [1.7K]

Answer: 129

Step-by-step explanation: First find the area of the circle. Since we know the area of a circle is πr²  (pi multiplied by the radius squared) we can find the area of the half circle. The radius is 5 (because radius is half of the diameter)

Area=3.14(5)²

       =3.14(25)

       =78.5

But since this is just a half circle, divide this by 2

That will get 39.25

Then add this to the area of the rectangle (L*W) which is 90

That will get about 129

4 0
3 years ago
Which line represents the direct variation equation y = 1/2x?
Verdich [7]

Answer:

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Step-by-step explanation:

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You can also see that the slope of C is 1/2 because it passes through the points (0.0) and (2, 1).

7 0
3 years ago
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eimsori [14]

Answer:

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Step-by-step explanation:

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dimaraw [331]

Answer:

x=27

Step-by-step explanation:

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<h2><u><em>PLEASE MARK AS BRAINLIEST!!!!!</em></u></h2>
4 0
2 years ago
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