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nadya68 [22]
2 years ago
10

Please help. don’t understand :((

Mathematics
2 answers:
Greeley [361]2 years ago
8 0

Answer:

Step-by-step explanation:

place x = 19

f(19) = 3 / 19 + 2 - Sqrt 21 - 3

= 3/21 - 4

= - 81/21

= - 27/7

nalin [4]2 years ago
8 0

Answer:

f(19) = - \frac{27}{7}

Step-by-step explanation:

Given

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

To evaluate f(19), substitute x = 19 into f(x) , that is

f(19) = \frac{3}{19+2} - \sqrt{19-3}

       = \frac{3}{21} - \sqrt{16}

       = \frac{1}{7} - 4

       = \frac{1}{7} - \frac{28}{7}

       = - \frac{27}{7}

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3 years ago
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Write an equation in slope-intercept form for the line with slope 7 and y-intercept -5
Bogdan [553]

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8 0
3 years ago
Use a inequality symbol to compare -3x+7 -10-2
abruzzese [7]
Hey there,

Let's remember that a (inequality symbol) is things like (<), (>), (≤),(≥), (≠).

So, I believe that (-3x+7) and (-10-2) are separate. So we will find that out :)

Let's first do (-3x+7). As simplifying this expression here, we take that "x" of for a while and just stick to (-3+7). 

    -3
+   7
______
     4

Let's bring that "x" back, and the answer would be 4x for a while.

So far, 4x is the answer.
_____________________________________________________________

Now, Let's work on the other side.

We are talking about (<span>-10-2)

    -10
-      2
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</span>     -12

So, by solving the answer to (-10-2), we got -12.

So, let's determine what is greater . . . . . 

What \ is \ greater?

-12 or 4.

-12 is on the negative side, and the number 4 is positive. This would conclude that 4 is great than -12.

Your correct answer would look like . . . 

<span>(-3x+7) > (-10-2)
</span>
I really hope this helps you alot.

~Jurgen

8 0
2 years ago
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