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FinnZ [79.3K]
3 years ago
9

Which word expression represents the algebraic

Mathematics
1 answer:
gregori [183]3 years ago
7 0
I believe the Answer is A
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20. Suppose you need to re-administer this injection at the point when the concentration is less than 0.5%. If the first injecti
IceJOKER [234]
Given that the function

C(h)=\frac{2h^2+5h}{h^3+8}

models the concentration of a medication in the bloodstream (as a percent), hours (h) after its injection into muscle tissue.

The number of hours it will take for the concentration of the injection to be less than 0.5% is given by:

0.5\ \textgreater \ \frac{2h^2+5h}{h^3+8} \\ \\ \Rightarrow0.5(h^3+8)\ \textgreater \ 2h^2+5h \\ \\ \Rightarrow h^3+8\ \textgreater \ 4h^2+10h \\ \\ \Rightarrow h^3-4h^2-10h+8\ \textgreater \ 0 \\ \\ \Rightarrow h\ \textgreater \ 5.54

Given that the first injection was given at 8:00 am, the time the next injection should be given is 2 pm.
8 0
3 years ago
Anybody knows how to do this ?????
Afina-wow [57]

Answer:

the quickest way would be to "complete the square"

on x^2 + 5x - 7

you will end up with  (x+2.5)² = 13.25

or

 y =  (x+2.5)²-13.25    

the vertex

VERTEX: (-2.5,-13.25)    

Solution/X-Intercepts: -6.14 AND 1.14  

Step-by-step explanation:

 

3 0
3 years ago
What is the area of the isosceles trapezoid shown?
balandron [24]

If you want the area of the entire trapeziod.

The formula for area of a trapeziod is:

1/2h(b₁+b₂)

So the equation applied to the trapeziod is:

2.5(20+12)

20+12 is 32. 32 multiplied by  2.5 is 80.

<h3><u><em>Your answer is 80.</em></u></h3>
4 0
4 years ago
Read 2 more answers
(2x + 64)。<br> 中个<br> (4x + 8)。<br> What is x?
JulsSmile [24]

Answer:

if that arrow stands for an equal, than x=28

4 0
3 years ago
2
sergij07 [2.7K]

Answer:

21 packets bought, 10 packets free

Step-by-step explanation:

7 0
3 years ago
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