Answer:
t=-8
Step-by-step explanation:
-5t-2(5t+10t)=100
-2 x 5t=-10t
-2 x 10 = -20
-5t-10t-20=100
combine terms and add 20
-15t=120
divide by -15
t=-8
Well the opposite of a square is a square root so it would be s=[square root of]60
Answer:
Recall from Logarithm law Log a - Log b = Log (a/b)
so, Log 2 - Log 4 = Log ( 2/4)
= Log ( 1/2).
Also from the law
Log (a/b) = Log a - Log b
i.e Log (1/2) = Log 1 - Log 2
Recall: Log 1 = 0
which implies : Log 1 - Log 2 = 0 - Log 2
= - Log 2
Step-by-step explanation:
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