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3 years ago

If 7+5i is a zero of a polynomial function of degree 5 with coefficients, then so is _.

1 answer:

defon3 years ago

8 0

Answer: If 7+5i is a zero of a polynomial function of degree 5 with coefficients, then so is its conjugate 7-i5.

Step-by-step explanation:

We know that when a complex number $z=a+ib$ is a root of a polynomial with degree 'n' , then the conjugate of the complex number ( $\overline{z}=a-ib$ ) is also a root of the same polynomial.

Given: 7+5i is a zero of a polynomial function of degree 5 with coefficients

Here, 7+5i is a complex number.

So, it conjugate ( $\overline{7+5i}=7-5i$ ) is also a zero of a polynomial function.

Hence, if 7+5i is a zero of a polynomial function of degree 5 with coefficients, then so is its conjugate 7-i5.

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Lydia's teacher wants her class to take note of the gas prices around town and round them all to the nearest whole number. Lydia

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3.41, due to it being below .50

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3 years ago

The distance between mumbai and dubai is about 1940 km if the cruising speed of the emirates flight is 595 km/hr how long does i

inna [77]

Answer:

3.26 hours

Step-by-step explanation:

speed = distance / time

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3 years ago

When 4a-9b=22 and b= -2, what is the value of a? A.-10/3 B.-14/9 C.1 D.4 E.10

ycow [4]

4a-9b=22

substitute b=-2

4a -9(-2) = 22

4a +18 =22

subtract 18 from each side

4a = 4

divide by 4

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Choice C

7 0

3 years ago

Read 2 more answers

PLEASE!!!!! HELP ME!!!!!!

kati45 [8]

Answer:

$15 = a_1 r^4$ (1)

$1 = a_1 r^5$ (2)

If we divide equations (2) and (1) we got:

$\frac{r^5}{r^4}= \frac{1}{15}$

And then $r= \frac{1}{15}$

And then we can find the value $a_1$ and we got from equation (1)

$a_1 = \frac{15}{r^4} = \frac{15}{(\frac{1}{15})^4} =759375$

And then the general term for the sequence would be given by:

$a_n = 759375 (\frac{1}{15})^n-1 , n=1,2,3,4,...$

And the best option would be:

C) a1=759,375; an=an−1⋅(1/15)

Step-by-step explanation:

the general formula for a geometric sequence is given by:

$a_n = a_1 r^{n-1}$

For this case we know that $a_5 = 15, a_6 = 1$

Then we have the following conditions:

$15 = a_1 r^4$ (1)

$1 = a_1 r^5$ (2)

If we divide equations (2) and (1) we got:

$\frac{r^5}{r^4}= \frac{1}{15}$

And then $r= \frac{1}{15}$

And then we can find the value $a_1$ and we got from equation (1)

$a_1 = \frac{15}{r^4} = \frac{15}{(\frac{1}{15})^4} =759375$

And then the general term for the sequence would be given by:

$a_n = 759375 (\frac{1}{15})^n-1 , n=1,2,3,4,...$

And the best option would be:

C) a1=759,375; an=an−1⋅(1/15)

4 0

3 years ago

A car with a mass of 500 kg is accelerating at 10 m/s². What is the force being applied the car’s engine?

Naya [18.7K]

Answer:

M=500kg

a=10m/s^2

By formular:

F=ma

F=500*10

F=5000N

8 0

3 years ago