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2 years ago

If (x + 8) is a factor of f(x), which of the following must be true?

Mathematics

1 answer:

ankoles [38]2 years ago

6 0

Answer:

$x = -8$ is a root.

$f(-8) = 0$ is correct.

Step-by-step explanation:

$(x + 8)$ is a factor of $f(x)$

then it must be

$x = -8$ is a root.

Therefore,

$f(-8) = 0$ is correct.

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kolezko [41]

We are given the following quadratic equation

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The x-coordinate of the vertex is given by

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The product of 2/5a²x and -1/5x²a is?

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So you first multiply the fractions: 2/5 times -1/5 = -2/25; then the a's: a^2 times a equals a^3; then multiply the x's: x times x^2 equals x^3.
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creativ13 [48]

Answer: c) All of the above

Step-by-step explanation:

a) X=the number of color-blind males of the randomly chosen 20 individuals

Thus, X is binomial with n = 20 and p = 0.08.

Y represents the number of color-blind females of the randomly chosen 40 individuals

Thus, Y is also binomial with n = 40 and p = 0.01.

b) However, Z represents the total number of color-blind which is 60. The probability of being color-blind is not equal among all individuals as it is for X (0.08) and Y (0.09). Thus, Z is not binomial.

In conclusion both a and b are correct, which gives the correct answer number c) all of the above.

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