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insens350 [35]
3 years ago
14

f(x) is a polynomial of degree 4 with real coefficients; two of its zeros are -3 (with a multiplicity of one) and 4 - i . How ma

ny x-intercepts does f(x) have? Explain how you know using complete sentences. Make sure your explanation is convincing and thorough. ​
Mathematics
1 answer:
Aleksandr-060686 [28]3 years ago
8 0

Answer:

Step-by-step explanation:

complex zeros always occur in pairs.

so zeros are -3,4-i,4+i

so fourth zero also intersects x-axis.

Hence there are two x-intercepts only.

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Linda watched a video. The introduction is 2 minutes, and the video is 7 minutes. What percentage of the video is the introducti
kolezko [41]

Answer:

22.222222%

Step-by-step explanation:

all together the entire video is 9 min and 2 of those are the intro so 2/9 and that as a percent is the answer

4 0
3 years ago
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Estor works at a garden center where he plants flowers. It takes him 2 1/2 hours to plant 15 flowers.
miss Akunina [59]

Answer:

b

Step-by-step explanation:

convert 2 1/2 hours into minutes to be easier to work with

15 / 150 = 10 minutes

every 10 minutes he pots a plan.

there are 210 minutes in 3 1/2 hours

210 / 10 = 21  

7 0
3 years ago
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AABC is a right triangle. AB=____
rjkz [21]

Since ABC is a right triangle, we can use Pythagorean Theorem to solve for side AB.

Pythagorean Theorem: a^2 + b^2 = c^2

4^2 + 7^2 = c^2

16 + 49 = c^2

65 = c^2

c = 8.06

Hope this helps!! :)

6 0
3 years ago
Read 2 more answers
Which circles are congruent
Usimov [2.4K]

Answer:

Correct choice is 3rd choice

Step-by-step explanation:

Congruent circles must have congruent radii.

There are four circles with radii of 3 in, 4 in, 5 in and 3 in.

Hence, the first circle is congruent to the last circle, or circle A is congruent to the circle D.

5 0
4 years ago
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Given cscx =-5/2 between 270 and 360 find sin2x
ICE Princess25 [194]
Hello : 
cscx = -5/2
1/sinx =-5/2
sinx=-2/5
sin²x+cos²x=1
4/25+cos²x=25/25
cos²x = 21/25
between 270 and 360 : cosx > 0          cosx=(<span>√21)/5
but : sin2x =2sinx cosx
       sin2x = 2(-2/5)(</span>(√21)/5)
       sin2x = (-4√21)/25
3 0
3 years ago
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