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NNADVOKAT [17]
2 years ago
12

Please help, question is below

Mathematics
2 answers:
Darya [45]2 years ago
6 0

Answer:

  (a)  The number of positive zeros is either 2 or 0. The number of negative zeros is either 2 or 0.

Step-by-step explanation:

The possible numbers of real zeros can be found using Descarte's Rule of Signs.

<h3>Rule</h3>

When signs of coefficients of terms of the polynomial are listed in order of decreasing degree, the number of sign changes can be counted. That number is the number of possible positive real zeros of the polynomial.

When the signs of odd-degree terms are changed, the number of sign changes becomes the possible number of negative real zeros.

The actual number of real zeros may be less by a multiple of 2. (The zeros may be complex, and complex zeros come in pairs.)

<h3>Application</h3>

The signs of the terms in the given polynomial are ...

  + - + + + . . . . . 2 sign changes: 2 or 0 positive real zeros

When the signs of odd-degree terms are changed, they become ...

  + + + - + . . . . . 2 sign changes: 2 or 0 negative real zeros

Descarte's rule of signs lets us conclude ...

  • The number of positive zeros is either 2 or 0.
  • The number of negative zeros is either 2 or 0.

__

<em>Additional comment</em>

When we graph the function, we find there are no real zeros. All four of the zeros are complex.

dimulka [17.4K]2 years ago
5 0

The number of positive zeros is either 2 or 0. The number of negative zeros is either 2 or 0

<h3>How to determine the true statement?</h3>

The polynomial function is given as:

f(x)=x^4-2x^3\ +\ 11x^2+5x\ +\ 6

The degree of the polynomial function is:

Degree = 4

Divide by 2

Degree/2 = 2

This means that:

The number of positive zeros and negative zeros can be 2

The difference between these zeros count is:

Difference= 2 - 2 = 0

The number of positive zeros and negative zeros can also be 0

Hence, the number of positive zeros is either 2 or 0. The number of negative zeros is either 2 or 0

Read more about polynomial functions at:

brainly.com/question/12976257

#SPJ1

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Step-by-step explanation:

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3 years ago
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3 years ago
Find the angle between the hands of a clock at 5:15<br><br> A 60<br> B 67.5<br> C 75
Viktor [21]

Answer:

Option B is correct.

67.5 degree

Step-by-step explanation:

To find the angle between the hands of a clock.

Given that:

Hands of a clock at 5 : 15.

We know that:

A clock is a circle and it always contains 360 degree.

Since, there are 60 minutes on a clock.

\frac{360^{\circ}}{60 minutes} = 6^{\circ} per minutes

so,  each minute is 6 degree.

The minutes hand on the clock will point at 15 minute,

then, its position on the clock is:

(15) \cdot 6^{\circ} = 90^{\circ}

Also, there are 12 hours on the clock

⇒Each hour is 30 degree.

Now, can calculate where the hour hand at 5:00 clock.

⇒5 \cdot 30 =150^{\circ}

Since, the hours hand is between 5 and 6 and we are looking for 5:15 then :

15 minutes is equal to \frac{1}{4} of an hour

⇒150+\frac{1}{4}(30) = 150+7.5 = 157.5^{\circ}

Then the angle between two hands of clock:

⇒\theta = 150.75 -90 = 67.5^{\circ}

Therefore, the angle between the hands of a clock at 5: 15 is: 67.5 degree.

4 0
3 years ago
Read 2 more answers
Which one should I choose
bulgar [2K]

Answer:

I believe the answer is 12x 5

5 0
3 years ago
Read 2 more answers
The answer's are in the image sorry if you cant see them
Simora [160]
C. "David's equation is correct, because their spending will be multiplied by the number of months and then subtracted from their savings"

they are technically saying "Look we have 12,350 to use. How long (y) will the savings (12,350) last after using 240 each month (x)
so the amount they use *PER* month gets subtracted from the savings because they are using that money to pay with

Hope this helps :)
8 0
3 years ago
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