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atroni [7]
3 years ago
13

Alyssa took a math test for 20 questions and she answered 16 questions correctly in order to get an a she needs to answer at lea

st 90% of the questions right did Alyssa get an a on the math test explain
Mathematics
1 answer:
Elenna [48]3 years ago
6 0

Answer:

She did not qualify the exam.

Step-by-step explanation:

Given data

Total no of question in a test = 20

No. of question answered correctly = 16

Percentage of question answered correctly

(\frac{16}{20}) 100 = 80

But in order to get in the exam the student must have to score at least 90 %. But she got only 80 % so she did not qualify the exam.

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Which of the following is a polynomial with rootsnegative square root of 5, square root of 5, and 3
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Answer:

P(x) = x³ - 3x² - 5x + 15

Step-by-step explanation:

∵ The roots of the polynomial are -√5 , √5 , 3

∴ The polynomial has 3 factors:

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∴ P(x) = (x - √5)(x + √5)(x - 3)

          = (x² + √5x - √5x - 5)(x - 3)

          = (x² - 5)(x - 3) = x³ - 3x² - 5x + 15

∴ P(x) = x³ - 3x² - 5x + 15

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