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mrs_skeptik [129]
3 years ago
10

Which of the following is not a zero of the function shown below?

Mathematics
2 answers:
Ierofanga [76]3 years ago
7 0

Answer:

B

Step-by-step explanation:

For a number to be a zero of the polynomial, the function has to be equal to 0 if we were to plug in the number into x.

Let's find each:

plugging in x = -2 into the function:

2(-2)^4-(-2)^3-42(-2)^2+16(-2)+160\\=0

so this is a zero.

Plugging in x = 2 into the function:

2(2)^4-(2)^3-42(2)^2+16(2)+160\\=48

This is NOT a zero

Plugging in x = 4 into the function:

2(4)^4-(4)^3-42(4)^2+16(4)+160\\=0

this is a zero

Plugging in x = -4 into the function:

2(-4)^4-(-4)^3-42(-4)^2+16(-4)+160\\=0

this is a zero

hence, x = 2 in NOT a zero, answer choice B is right

erica [24]3 years ago
5 0

Answer:

B

Step-by-step explanation:

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Step-by-step explanation:

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A typical middle-income household in 1980 earned $34,757. A similar household in 2009 earned $38,550. What was the relative incr
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Given conditions are :

In 1980's, a typical middle-income household earned=  $34,757

In 2009, a similar middle-income household earned= $38,550

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