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MariettaO [177]
3 years ago
15

If f(x)= 3/x+2- square root x-3, complete the following statement: f(19)=

Mathematics
1 answer:
I am Lyosha [343]3 years ago
8 0

f(7)≈1.6666                Please mark me as brainliest

round

f(7)=1.67

The domain of the function is the set of all the values of x that would allow the function to have real values. Since the radicand is x - 3, the value of x cannot be less than 3 because that would make the value of sqrt (x - 3) an imaginary number. Thus, the domain should be all numbers GREATER than or equal to 3.

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Evaluate 12x – 3y when x = -1/4 and y=3.<br> The value of the expression is
kap26 [50]

Answer:

3

Step-by-step explanation:

3 0
4 years ago
10n^3-25n^2-16n+40 I'm so lost on this please help
Mariulka [41]
I think you're factoring this...? You can do that by grouping here.  Put the 4 terms in groups of 2 and factor out the greatest common factor. What's left behind is a common binomial factor that can also then be factored out. Like this:
(10 n^{3} -25 n^{2})-(16n+40)
Factoring what we can out of both sets gives us this:
5 n^{2} (2n-5)-8(2n-5)
The 2n-5 is a common factor between both the sets of terms, which in turn can also be factored out:
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I'm not exactly sure what you are doing with this, but we can keep factoring for the sake of completeness.  The 5 n-squared term can also be factored:
5 n^{2}-8=0 and 5 n^{2} =8 and n^{2} = \frac{8}{5} so n= \frac{ \sqrt{8} }{ \sqrt{5} }.  Simplifying that down its simplest is this:
n=+/- \frac{2 \sqrt{10} }{5}
So your three factors for that polynomial are
(n- \frac{5}{2} ),(n- \frac{2 \sqrt{10} }{5} ),(n+ \frac{2 \sqrt{10} }{5} ),

6 0
3 years ago
A pie chart titled Which Pet Would you Choose: Dog, Cat, or Fish question mark. 50 percent chose a dog, 25 percent chose a cat,
Galina-37 [17]

Answer:

25%

Step-by-step explanation:

It says 25% chose fish.

5 0
3 years ago
PLEASE HELP ANYONE HELP ?!!!!!!!!!!!!!!!)))):::::
stealth61 [152]

Answer:

3x

Step-by-step explanation:

givens: x=4

now try your options:

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The first option is correct, therefore the answer is 3x

3 0
3 years ago
Read 2 more answers
How can I this math equation -5 -x =-8
Liula [17]

Answer: x = 3

Step-by-step explanation:

-5 -x = -8

-× = -8 + 5

-x = -3

x = 3

6 0
3 years ago
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