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3 years ago

Write the domain and range of the graph in set-builder and interval notation

Mathematics

1 answer:

Oksi-84 [34.3K]3 years ago

4 0

Answer:

(19.20.21.22.23.24.25.26.27)

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Which two equations would be most appropriately solved by using the quadratic formula?

leva [86]

For this case we have that by definition, the quadratic formula is: $x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}$

A quadratic equation is of the form:

$ax ^ 2 + bx + c = 0$

Option A: This equation can be solved without the quadratic formula

$x ^ 2 = \frac {9} {3}\\x ^ 2 = 3\\x = \pm \sqrt {3}$

Option B:

This equation is not as easy to solve by factoring or as option A. We can use the quadratic formula.

Option C:

$-2x ^ 2 + 5x = 7$

Similarly, this equation can be solved with the quadratic formula

Option D:

$- (x - 3) (x + 9) = 0$

In this factored equation we can see that the roots are

$x_ {1} = 3\\x_ {2} = - 9$

Answer:

Option B, C

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4 years ago

Find the unit rate (how much for one hour)

IrinaVladis [17]

The unit rate is 3 and how much for one hour is 3
That’s because you can see when the hours go up you see the money expanding by 3

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3 years ago

From the graph, write the linear equation in slope-intercept form

elena55 [62]

Answer:

1.y=1/2+2

2.y=-2+1

3.y=3/2+3

4.y=-2/3-2

Step-by-step explanation:

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3 years ago

Graph the function f(x) = 2 sqrt x+3.

Anna35 [415]

Answer:Plug it into demos and base your own graph off of the one that they give you.

Step-by-step explanation:

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3 years ago

What do 5a represent in f(x)=5ax

Simora [160]

Answer:

$y = mx + c \\ f(x) = 5ax$

By comparing both the equation we get that,

<h2>5a represent a <em><u>slope</u></em> in f(x)</h2>

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3 years ago