for every 5 pounds of pasta served , 15 people can be fed. how many people can be fed with 4 pounds of pasta?
1 answer:
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Answer:
x = ± 3, x = ± 2i
Step-by-step explanation:
Given
f(x) = (x² + 4)(x² - 9)
To find the zeros let f(x) = 0, that is
(x² + 4)(x² - 9) = 0
Equate each factor to zero and solve for x
x² - 9 = 0 ( add 9 to both sides )
x² = 9 ( take the square root of both sides )
x = ± = ± 3
x² + 4 = 0 ( subtract 4 from both sides )
x² = - 4 ( take the square root of both sides )
x = ± = ±
= ±
×
= ± 2i
Thus zeros are
x = - 3, x = 3 ← real
x = - 2i, x = 2i ← complex
Answer:
answer 1 = true
answer 2 . Area of shaded part is 87m^2
<em><u>explanation in the pic above</u></em>
