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mestny [16]
3 years ago
5

Please help ASAP!!!!

Mathematics
2 answers:
Marina CMI [18]3 years ago
5 0

Luis\: didn't\: solve\: the\: function\: properly, because\: in\: line\: 4:  \sqrt{16}  = 4, instead \: he \: wrote \:  \sqrt{16}  =  \sqrt{4}

nata0808 [166]3 years ago
5 0

Answer:

Luis didn't solve the question properly.

Line 4 is not correct.

Step-by-step explanation:

We have given a quadratic equation.

-x²+10-21  = y

The question is solved in given pic.

The quadratic formula is applied to given equation.

Line 4 is not correct because √16 ≠ √4

Line 4 : x = -10±4 / (-2)

 x = -10+4 / (-2) ; x = -10-4 / (-2)

 x = -6/-2      ;   x = -14/-2

 x = 3     ;      x  = 7 which is correct answer.

Luis didn't solve the question properly.

Line 4 is not correct.

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In a large accounting firm, the proportion of accountants with MBA degrees and at least five years of professional experience is
Rasek [7]

Answer:

The probability that this accountant has an MBA degree or at least five years of professional experience, but not both is 0.3

Step-by-step explanation:

From the given study,

Let A be the event that the accountant has an MBA degree

Let B be the event that the accountant has at least 5 years of professional experience.

P(A) = 0.35

P(A)^C = 1 - P(A)

P(A)^C = 1 - 0.35

P(A)^C = 0.65

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P(B) = 1 - P(B)^C

P(B) = 1 - 0.45

P(B) = 0.55

P(A ∩ B ) = 0.75 P(A^C \ \cap  \  B^C)

P(A ∩ B ) = 0.75 [ 1 - P(A ∪ B) ]  because  P(A^C \ \cap  \  B^C)  = P(A \cup B)^C

SO;

P(A ∩ B ) = 0.75 [ 1 - P(A) - P(B) + P(A ∩ B) ]

P(A ∩ B ) = 0.75 [ 1 - 0.35 - 0.55 + P(A ∩ B) ]

P(A ∩ B ) - 0.75  P(A ∩ B) = 0.75 [1 - 0.35 -0.55 ]

0.25  P(A ∩ B) = 0.075

P(A ∩ B) = \dfrac{0.075}{0.25}

P(A ∩ B) = 0.3

The probability that this accountant has an MBA degree or at least five years of professional experience, but not both is: P(A ∪ B ) - P(A ∩ B)

= P(A) + P(B) - 2P( A ∩ B)

= (0.35 + 0.55) - 2(0.3)

= 0.9 - 0.6

= 0.3

∴

The probability that this accountant has an MBA degree or at least five years of professional experience, but not both is 0.3

3 0
2 years ago
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kakasveta [241]

Answer: The last one

Step-by-step explanation:

I think this because the graph starts from H the number of hours studied and when u add the numbers and divide them up which gives you the equation 65 + 50 . Any questions please text me. Have a nice day.

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Step-by-step explanation:

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Answer:

-6x + -36 = y + 4

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