3 years ago

What is the range of the function f(x) = 3x^2 + 6x - 8?

Mathematics

1 answer:

Airida [17]3 years ago

3 0

R; all quadratic functions are going to have ranges and domains of *ALL REAL NUMBERS*.

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Alekssandra [29.7K]

Answer:

Answer is A.

Hope this helps.

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3 years ago

Choose two positive integers a and b, making sure that a<5 and b>80 . The width of a rectangular computer screen is a inch

qwelly [4]

Answer:

Dimensions of the screen are a minimum of 10 inches wide by 8 inches high. The difference between the height and width will be 2 inches

Step-by-step explanation:

$Height = H$

$Width = H + a$

$Area = Height x Width$

$b = H * (H + a)$

$b = H^{2} + aH$

$H^{2} + aH > 80$

$H^{2} + aH - 80 > 0$

a<5 means 'a' can be a = 1, 2, 3, 4

Solving for H for each option of 'a' will give values of 'H' using the quadratic formula below

$H = \frac{-b\±\sqrt{b^{2}-4ac}}{2a}$

As 'a' and 'b' must be positive integers, H and W must be positive integers as well,

$a = 1, H = 8.46, H = -9.46$

$a = 2, H = 8, H = -10$

$a = 3, H = 7.57, H = -10.57$

$a = 4, H = 7.17, H = -11.17$

Based on above possible answers:

$a=2, H=8$

$W = H + a$

$W = 8 + 2$

$W = 10$

Dimensions of the screen are a minimum of 10 inches wide by 8 inches high. The difference between the height and width will be 2 inches

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3 years ago

Graph this function: y =3/4x - 4 (you can just put the cordinants)

Aloiza [94]

I’m assuming 3/4x is a fraction
the coordinates are (0,-4) and (4,-1)

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3 years ago

Are the data shown in this line plot skewed left, skewed right, or not skewed? skewed right not skewed skewed left Line plot ove

Nimfa-mama [501]

The Answer is Shewed Left

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4 years ago

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ehidna [41]

Answer:

0-5

Step-by-step explanation:

The Range Is 0-5 Atleast what i understand Gl Passing!

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3 years ago

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