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-Dominant- [34]
3 years ago
11

Suppose a student is totally unprepared for a five question true or false test and has to guess for every question. Getting one

question correct is independent of getting another question correct. What is the probability that she guessed all five of them correctly?
Mathematics
1 answer:
MrRa [10]3 years ago
3 0

Answer:

1/32

Step-by-step explanation:

½×½×½×½×½ = 1/32

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According to the fundamental theorem of algebra, how many zeros does the function f(x) = 4x3 − x2 − 2x + 1 have?
jarptica [38.1K]

Answer: 3 zeroes.


Explanation:-

  • The fundamental theorem of algebra states that any polynomial with degree m>0  and complex coefficients has atleast one complex root.
  • Corollary of fundamental theorem states that for any polynomial with degree m>0 has exactly m solutions.

The given function is f(x)=4x^3-x^2-2x+1

Because it is a polynomial function with degree 3>0 , Therefore by corollary of fundamental theorem of algebra , it has 3 zeroes.

8 0
3 years ago
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HURRY THIS IS TIMED. I WILL GIVE BRANIEST IF CORRECT. EXPLAIN YOUR ANSWER!! THX
Aleks [24]

Answer: A and c

Step-by-step explanation: because they are the only ones that have p,x,m and not just seperate.

4 0
3 years ago
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4x + 8y=20<br> 3x+6y=15<br> solve this system of equations
laila [671]
4x=20-8y

x=5-2y now use this value of x in the second equation...

3(5-2y)+6y=15

15-6y+6y=15

15=15  This is true for any y or x value.

So there are infinitely many solutions as the two equations describe the same line.
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3 years ago
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Nataliya [291]
Use substitution and substitute y into the other equation. One of the equations already gives you y in terms of x, so use that and substitute it into the other equation. y = 3x - 4

Plug into the other equation: -3y = -9x + 12 
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-9x + 12 = -9x + 12
This is an identity. So that means that any value of x makes this equation true. So B.
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