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4 years ago

Which point is an x-intercept of the quadratic function f(x) = (x – 4)(x + 2)?

2 answers:

7 0

The quadratic equation is in factored form, which is f(x) = (x - a)(x - b), where a and b are the x-values for the x-intercepts.

The x-values for the x-intercepts are 4 and -2. We know that the y-value at any x-intercept must be 0 (otherwise it isn't an x-intercept).

Thus, either the points (4,0) or (-2,0) must be your answer (the question is only asking for one x-intercept).

mr Goodwill [35]4 years ago

6 0

Answer:

(-2,0)

Step-by-step explanation:

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3 years ago

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D=rt
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3 years ago

Y+12=7y solve for y mathmatics

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Answer:

Step-by-step explanation:

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3 years ago

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Decide whether or not each equation represents a proportional relationship. A.The remaining length (L) of 120-inch rope after x

bulgar [2K]

Answer and Step-by-step explanation: An equation represents proportional relationship when dividing the quantities of the equation results in a quotient that is always the same. For example, in general:

Equation: y = mx

$\frac{y}{x}$ = m

m is a constant value, which means is the same.

A. Equation: 120 - x = L

Equation from alternative A is NOT proportional since the division of the quantities doesn't result in a constant.

B. Equation: 1.08p = t

Dividing total cost per item's price, will always give the sales tax, which is constant. So, this equation IS proportional.

$\frac{t}{p}=1.08$

C. Equation: $x=\frac{m}{4}$

This equation is proportional because dividing marbles per how much each sister gets, always gives the number of sisters:

$\frac{m}{x}=4$

D. Equation: $V=12s^{2}$

This equation is NOT proportional because side length is squared, so it is not constant linearly.

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3 years ago

Divide. Express your answer in lowest terms. 1/8 Divided by 4 =

Yuliya22 [10]

$\sf\dfrac{1}{8}\div4$

Find the reciprocal of 4 and multiply.

$\sf\dfrac{1}{8}\times\dfrac{1}{4}$

Multiply the numerators and denominators together:

$\boxed{\sf\dfrac{1}{32}}$

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4 years ago

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