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Delicious77 [7]
3 years ago
11

What is the domain of the function f(x)= square root of 1/3x+2

Mathematics
2 answers:
NARA [144]3 years ago
4 0
Hello!

The domain is x \geq -6

Hope this helps!
Kay [80]3 years ago
3 0

Answer:

Domain of f(x) is { x : x ∈ R and x > -6 }

Step-by-step explanation:

Given function is,

f(x)=\sqrt{\frac{1}{3}x+2}

We need to find Domain of the function.

The domain of a function is the complete set of possible values of the independent variable.

Domain of f(x) is set of real number excluding point where value under square root becomes negative.

So, to find that point

put ,

\farc{1}{3}x+2>0

x + 6 > 0

x > -6

So, Value of x must be greater than -6

⇒ Domain of f(x) = { x : x ∈ R and x > -6 }

Therefore, Domain of f(x) is { x : x ∈ R and x > -6 }

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How many real solutions does this system of equations have? x^2 + y^2 = 36
Vinvika [58]

Answer:

C:  there are two real solutions

Step-by-step explanation:

x^2 + y^2 = 36 is the equation of a circle centered at the origin and with radius √36, or 6.  Even a rough sketch of this circle would enable you to visualize what is happening here.  

3x – y + 1 = 0 may be solved for y:  y = 3x + 1.  The y-intercept of this straight line is (0, 1).  Plot this point inside the circle of radius 6 mentioned above and then draw a straight line with slope m = 3 through it.  This line will intersect the circle in two places; they represent real solutions.

Alternatively, substitute 3x + 1 for y in x^2 + y^2 = 36:

x^2 + (3x + 1)^2 = 36, or

x^2 + 9x^2 + 6x + 1 = 36, or

10 x^2 + 6x + 1 - 36 = 0, or

10 x^2 + 6x - 35 = 0.  This is a quadratic equation.  We'll use the quadratic formula to find solutions which represent the intersections of this line with this circle:

The coefficients are a = 10, b = 6 and c = -35.  Thus, the discriminant is

b^2 - 4ac, or 6^2 - 4(10)(-35), or 1436.  

Because the discriminant is positive, we can safely conclude that there are two real solutions, that is, two different, real x-values, each representing the x-coordinate of a point of intersection of the circle and the line.

The correct answer to this prolem is C:  there are two real solutions.

4 0
3 years ago
You are saving for a spring break cruise for the end of march of the next year thag costs $600. You start at $50 in August. At t
Doss [256]
March is 8 months away from August and the target amount is $600.
August = $50
September = $50 + (0.2*50)=$60
October = $60 + (0.2*60)=$72
November=$72+(0.2*72)=$86.4
December=$86.4 + (0.2*$86.4)=$103.68
January=$103.68+(0.2*103.68)= $124.416
February=$124.416+(0.2*124.416)=$149.3
March=$149.3 +(0.2*149.4)=$179.2

Total amount = $824.6

Yes, she will have money for the trip
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A rectangular prymaid is sliced to its base as shown in the figure.
Furkat [3]
The answer is D: rectangle
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What is the value of p in the equation?
Klio2033 [76]

Answer:10

Step-by-step explanation:multiply and simplify

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One hundred adults were asked to name their favorite sport and the results are shown in the circle graph. What sport was preferr
artcher [175]

Answer:

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Since 38 out of a 100 is 38 percent.


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