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inn [45]
3 years ago
5

What are the domain and range of the function f(x)= Squrt x-7+9

Mathematics
1 answer:
AnnyKZ [126]3 years ago
6 0

Answer:

  • domain: x ≥ 7
  • range: f(x) ≥ 9

Step-by-step explanation:

The domain is the set of values of x for which the function is defined. Those are the values of x that make the square root argument non-negative:

  x -7 ≥ 0

  x ≥ 7

__

Since the square root cannot be negative, the sum of it and 9 cannot be less than 9. The range is ...

  f(x) ≥ 9

You might be interested in
Sam is a waiter at a local restaurant where he earns wages of $7 per hour.
DochEvi [55]

Answer:

7h+5n=E

or

42+5n=E

Step-by-step explanation:

First write an equation : note key words like "per", "each" and "total".

7 per hour

5 each

6 hours

n= number of people

E= total earnings

total earnings

So:

7h+5n=E

$7 per hour plus $5 tips per person equals total earnings

7(6)+5n=E\\42+5n=E\\

3 0
3 years ago
What is the solution of sqrt x+2-15=-3
antiseptic1488 [7]

Answer:

Step-by-step explanation:

Without brackets, we are not exactly sure what is under the root sign. There are 3 choices.

sqrt(x) + 2 - 15 = - 3

sqrt(x + 2) - 15 = - 3

sqrt(x + 2 - 15) = - 3

I think the middle one is what you intend. If not leave a note.

sqrt(x + 2) - 15 = - 3                Add 15 to both sides.

sqrt(x + 2) - 15+15 = - 3+15     Combine

sqrt(x + 2) = 12                        Square both sides

x + 2 = 12^2                             Do the right

x + 2 = 144                               Subtract 2 from both sides.

x + 2-2 = 144-2

x = 142

3 0
4 years ago
PLEASE help!!!!!! You can get 50 points and a brainliest if you help me.
timofeeve [1]
It is D, because looking at a unit circle, 5pi/3 is about the same location as -sqrt3 which is approximately 1.4.
7 0
3 years ago
13 + 11s = -15 + 8s − 20
koban [17]

<em>Answer,</em>

<em><u>S = -16</u></em>

<em>Explanation,</em>

<em><u>Step 1: Simplify both sides of the equation.</u></em>

<em>13 + 11s = − 15 + 8s − 20</em>

<em>13 + 11s = − 15 + 8s + − 20</em>

<em>11s + 13 = (8s) + (</em><em><u>− 15</u></em><em> + </em><em><u>− 20</u></em><em>) </em><em>(Combine Like Terms)</em>

<em>11s + 13 = 8s + − 35</em>

<em>11s + 13 = 8s − 35</em>

<em><u>Step 2: Subtract 8s from both sides.</u></em>

<em>11s + 13 − 8s = 8s − 35 − 8s</em>

<em>3s + 13 = − 35</em>

<em>Step 3: Subtract 13 from both sides.</em>

<em>3s + 13 − 13 = − 35 − 13</em>

<em>3s = − 48</em>

<em><u>Step 4: Divide both sides by 3.</u></em>

<em>3s/3 = −48/3</em>

<em>s = -16</em>


<u><em>Hope this helps :-)</em></u>


3 0
3 years ago
What is x?
iren2701 [21]
X = 5 - 

-7x  - 3x + 2 = -8x - 8
+ 7x                 +7x
-3x + 2 = -x - 8
+3x        +3x
2 = 2x -8
+8       +8
10 = 2x
/2      /2
x = 5
7 0
3 years ago
Read 2 more answers
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