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2 years ago

For the function above is the discriminate, positive, negative, or zero?

Mathematics

1 answer:

fomenos2 years ago

4 0

Answer:

Step-by-step explanation:

When there is one x-intercept, the discriminant is zero.

The discriminant is used to compute the difference between the roots. When it is positive, the real roots are different, so there are two x-intercepts.

When the discriminant is zero, there is no difference between the roots, so there is one x-intercept (as here).

When the discriminant is negative, there are no x-intercepts and the two roots are complex.

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2 years ago

5 pounds of almonds cost $25. What is the unit price per pound?

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Answer:

Step-by-step explanation:

To find the unit price, we have to divide the price, $25, by the number of units, 5.

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2 years ago

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The distance between the baseball stadium and the airport is 1.6×10^6 centimeters.Which unit of measurement is most appropriate

Ad libitum [116K]

Answer:

<em>'Kilometers' is the most appropriate unit to measure this distance. </em>

Step-by-step explanation:

The distance between the baseball stadium and the airport is $1.6\times 10^6$ centimeters.

$(1.6\times 10^6)cm = (16\times 10^5)cm$

Now, <u>10⁵ centimeters is equal to 1 kilometer</u>.

That means, $(16\times 10^5)cm = (16\times 1)km= 16 km$

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2 years ago

A direct variation function contains the points (–9, –3) and (–12, –4). Which equation represents the function?

vladimir1956 [14]

Answer: third option.

Step-by-step explanation:

By definition, a direct variation function has the form shown below:

$y=kx$

Where k is a constant.

Then, knowing the given points, you can calculate k with the formula for calculate the slope of a line:

$m=\frac{y_2-y_1}{x_2-x_1}=\frac{-4-(-3)}{-12-(-9)}=\frac{1}{3}$

Substituting k into $y=kx$ , you obtain:

$y=\frac{1}{3}x\\\\y=\frac{x}{3}$

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3 years ago

Plz help me 20points

Alexandra [31]

Answer:

20 according to me. I am sorry if I'm wrong

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2 years ago

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