If line EF biscects <CEB, m<CEF=7x+21 and m<FEB=10x-3, find the measure of <DEB

Mathematics

1 answer:

vladimir2022 [97]3 years ago

6 0

tep explanation:\\\\\\

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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

Ms. Peters drove from her home to the park

worty [1.4K]

It takes 15 minutes for Ms. Peter to drive from park to her home

Given :

from her home to the park at an average speed of 30 miles per hour and

returned home along the same route at an average speed of 40 miles per hour

it takes 20 minutes to travel

Convert 20 minutes in to hour (divide by 60)

20 minutes = 1/3 hour

We know that distance = speed x time