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shepuryov [24]
3 years ago
11

If a polynomial function f(x) has roots 3 and V7, what must also be a root of f(x)?

Mathematics
1 answer:
Tatiana [17]3 years ago
6 0

Answer:

- \sqrt{7}

Step-by-step explanation:

Radical roots occur as conjugate pairs.

Thus if x = \sqrt{7} is a root then - \sqrt{7} is also a root

You might be interested in
12.3+9.75=?<br> 10,258÷46=?<br> Show your work
wariber [46]

Answer:

12.3 + 9.75 =22.05    10,258 ÷ 46 =

Step-by-step explanation:

for 10, 258 ÷ 46 i decide to type it

10258 46 = 223

223 = 2230 to the nearest tenth

223 = 223 to the nearest hundredth

223 = 223 to the nearest thousandth

= 0 to the nearest tenth

= 0 to the nearest hundredth

= 0 to the nearest thousandth

Other Divisions Math homework are

10258 divide by half plus 20

Homework answers: (10258/2) + 20 = 5149

10258 divide by half plus 40

Homework answers: (10258/2) + 40 = 5169

10258/46 divided by 2

Answer: (10258/46) ÷ 2 = 111.5

8 0
4 years ago
Help ASAP!!!!!! 20 points!!
nekit [7.7K]

Answer:

Hey there!

\frac{3+2-4^2(7)-5+2}{16-6(6)^2}

\frac{3+2-16(7)-5+2}{16-6(36)}

\frac{3+2-112-5+2}{16-216}

\frac{-110}{-200}

\frac{11}{20}

Let me know if this helps :)

7 0
3 years ago
What is the equation of the line that passes through (5,-3) and (3,7)
Sliva [168]

Answer:

-5x +22

Step-by-step explanation:

6 0
3 years ago
In a standard Normal​ distribution, if the area to the left of a​ z-score is about 0.3500​, what is the approximate​ z-score? Dr
wlad13 [49]

Answer:

z-score=0.385

(See attached picture)

Step-by-step explanation:

The procedure to find the z-score will depend on the resources we have available. I have a table with the area between the mean and the value we wish to normalize, so the very first thing we need to do is precisely find this area we need to analyze.

Everything to the left of thte mean will represent 50% of the data, so we start by subtracting:

50%-35%=15%

so we need to look in the table for the value 0.15.

In my table I can see that for an area of 0.15, the z-score will be between 0.38 (z-score of 0.1480) and 0.39 (z-score of 0.1517).

By doing some interpolation, you can determine a more accurate value of the z-score to be 0.385.

4 0
3 years ago
What must the radius of C be for PR to be tangent to it at Q?
Setler79 [48]

Answer:

D. 8

Step-by-step explanation:

Draw segment CQ which will be perpendicular to tangent PR.

So, triangle CQR will be right angled triangle right angle at Q.

Let radius of the circle be r.

Therefore,

CQ = CS = r

By Pythagoras Theorem:

{(r + 9)}^{2}  =  {r}^{2}  +  {15}^{2}  \\  \\  {r}^{2}  + 18r + 81 =  {r}^{2}  + 225 \\  \\ 18r = 225 - 81 \\  \\ 18r = 144 \\  \\ r =  \frac{144}{18}  \\  \\ r = 8

5 0
3 years ago
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