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patriot [66]
3 years ago
14

Which of these is an example of a discrete random variable?

Mathematics
1 answer:
34kurt3 years ago
7 0

Answer:

c

Step-by-step explanation:

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Determine the rational zeros for the function f(x)=x^3+7x^2+7x-15
alexandr402 [8]

Answer:

1,-3,-5

Step-by-step explanation:

Given:

f(x)=x^3+7x^2+7x-15

Finding all the possible rational zeros of f(x)

p= ±1,±3,±5,±15 (factors of coefficient of last term)

q=±1(factors of coefficient of leading term)

p/q=±1,±3,±5,±15

Now finding the rational zeros using rational root theorem

f(p/q)

f(1)=1+7+7-15

   =0

f(-1)= -1 +7-7-15

     = -16

f(3)=27+7(9)+21-15

    =96

f(-3)= (-3)^3+7(-3)^2+7(-3)-15

     = 0

f(5)=5^3+7(5)^2+7(5)-15

    =320

f(-5)=(-5)^3+7(-5)^2+7(-5)-15

      =0    

f(15)=(15)^3+7(15)^2+7(15)-15

     =5040

f(-15)=(-15)^3+7(-15)^2+7(-15)-15

      =-1920

Hence the rational roots are 1,-3,-5 !

4 0
3 years ago
Read 2 more answers
How many numbers between 1 and 100 are divisible by 3 or 2
Zielflug [23.3K]

Answer:

By 3: 33 numbers

By 2: 49 numbers

Both: 66 numbers

4 0
3 years ago
Plz help,.................refresh the page before u answer\
Soloha48 [4]
Composite is a number that is NOT prime. So we want to find an odd perfect square that IS prime to be a counterexample.
√36 = Not odd
√49 = 7 Factors only 1 * 7  so it is prime
√81 = 9 Factors 1, 3, 9 composite
√225 = 15 Factors 1,3, 5,9,15, 25, 45, 75, 225 composite

Counterexample for 2∧n - 1 Is prime
2^6 - 1 = 64 - 1 = 63 NOT PRIME Factors are: 1, 3, 7, 9,21, 63
2^5 - 1 = 32 - 1 = 31 Prime
2^3 - 1 = 8 - 1 = 7 Prime
2^2 - 1 = 4 - 1 = 3 Prime
3 0
3 years ago
Which sums are equal to -9+21? Choose
tekilochka [14]

Answer:

A, C

Step-by-step explanation:

6 0
3 years ago
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What's the Answer To 9 Hundreds Place And The 6 In The Hundreds
Andrews [41]
Between the two answer is 3 hundred
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3 years ago
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