square root n+5-square root n-10=1
add sqrt(n-10) on both sides
To remove square root we take square on both sides
Subtract n and add 9 on both sides
Now we divide both sides by 2
Take square on both sides
+-49= n - 10
49 = n-10 and -49 = n - 10
Add 10 on both sides
n= 59 and n = -39
Now we verify both solutions
When n = -39 we will get negative under the square root . that is complex so we ignore n=-39
n = 59 is our solution
This happens whenever
or
. More generally,
whenever you start with one of these angles and add any multiple of
, so the general solution would be
, where
is any integer. (Notice that when
, you end up with
.)
The thermometer will not directly indicate 0 °C because the thermometer need time to response. Especially alcohol in glass thermometers, the response time is slower than mercury in glass thermometers
100% because Jessica didn't get any question's wrong.