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shtirl [24]
4 years ago
6

If f(x)=square root x-3, which inequality can be used to find the domain of f(x)? A square root x-3 =>0 B x-3=>0 C square

root x-3<=0 D x-3<=0
Mathematics
2 answers:
dangina [55]4 years ago
6 0
The answer is x-3=>0 i just took the quiz
goldenfox [79]4 years ago
5 0

we have

f(x)=\sqrt{x-3}

we know that

The term in the root square can not be a negative number

so

(x-3)\geq0\\x\geq3

the domain is the interval----------> [3,∞)

therefore

<u>the answer is the option </u>

B (x-3)=>0

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i need to know what the equation of f (x) is to figure this out

5 0
3 years ago
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Which equation represents a line that passes through (–9, –3) and has a slope of –6?
Dahasolnce [82]
<h2>Hello!</h2>

The answer is:

The last equation,

y+3=-6(x+9)

<h2>Why?</h2>

To find which of the given equations represents a line that passes through the point (-9,-3) and has a slope of -6, we need to find an equation that can be satisfied by evaluating the given point.

We can see that the only equation that can be satisfied evaluating the point (-9,-3) is the last equation:

y+3=-6(x+9)

Evaluating the point, we have:

-3+3=-6*(-9+9)

0=-6*(0)

0=0

We can see that the equation is satisfied!

Also, we can see that evaluating the point into the other equations, they will not be satisfied.

Let's prove that:

Evaluating:

First equation:

y-9=-6(x-3)\\-3-9=-6*(-9-3)\\-12=-6*(-12)=72

The equation is not satisfied.

Second equation:

y+9=-6(x+3)\\-3+9=-6*(-9+3)\\6=-6*(-6)=36

The equation is not satisfied.

Third equation:

y-3=-6(x-9)

-3-3=-6(-9-9)

-6=-6(-18)=108

The equation is not satisfied.

Hence, the correct option is the last option, the equation that represents a line that passes through (–9, –3) and has a slope of –6 is the last equation:

y+3=-6(x+9)

Have a nice day!

Note: I have attached a picture for better understanding.

5 0
3 years ago
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√6 x √27 is equal to​
solong [7]

Answer:

9\sqrt{2} = 12.727922061

7 0
3 years ago
Write the inequality: The sum of x and 10 is less than -4
andrezito [222]

Answer:

x + 10 < -4

Step-by-step explanation:

x + 10 is less than -4, so -4 would have to be greater. You would put x + 10 on the left side and on the right side would be -4. In between would be a less than sign because x + 10 is LESS than -4.

4 0
3 years ago
<img src="https://tex.z-dn.net/?f=v%20%3D%20%20%5Cfrac%7Ber%7D%7Br%20%2B%20a%7D%20" id="TexFormula1" title="v = \frac{er}{r + a
Mrac [35]

Answer:

r = va/(e - v)

Step-by-step explanation:

v = er/(r + a)

vr + va = er

va = er - vr

va = r(e - v)

r = va/(e - v)

6 0
3 years ago
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