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3 years ago

F(x)=x^2-3 domain and range

Mathematics

1 answer:

Bad White [126]3 years ago

6 0

Domain is all real numbers
Range is [-3,∞)

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25 kids took a math test. If 20 kids passed the test, what percent of kids did not pass the test?

nata0808 [166]

Answer: 20%

Step-by-step explanation:

25 = 100%

25/5 = 5

100/5 = 20

That means 80% passed and 20% didnt.

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2 years ago

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$123.74856 rounded to the nearest cent would be?

Airida [17]

$123.75 you would round all of them to the nearest hundreth

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Anton [14]

Answer:

I would go with the second one.

Step-by-step explanation:

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3 years ago

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kenny6666 [7]

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3 years ago

Line m includes the points (-3, 3) and (-4,-6). Line n has the same slope as line m and

Sveta_85 [38]

For this case we have that by definition, the equation of a line of the slope-intersection form is given by:

$y = mx + b$

Where:

m: It's the slope

b: It is the cut-off point with the y axis

The slope of a line is given by:

$m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}}$

We have that the line m passes through the following points:

$(x_ {1}, y_ {1}): (-3,3)\\(x_ {2}, y_ {2}): (-4, -6)$

So, the slope of the line m is:

$m = \frac {-6-3} {- 4 - (- 3)} = \frac {-9} {- 4 + 3} = \frac {-9} {- 1} = 9$

Line n has the same slope so the equation is of the form:

$y = 9x + b$

We have as data that the y-intercept is $-\frac{2} {3}$ . Thus, we have that the equation of line n is:

$y = 9x- \frac {2} {3}$

ANswer:

$y = 9x-\frac {2} {3}$

3 0

3 years ago