Answer:
Step-by-step explanation:
hello :
tanx= 15/20
x=36.97°
Answer:
-3.7
Step-by-step explanation:
Answer:
x=12
Step-by-step explanation:
Answer:

Step-by-step explanation:
Using the formula for the exponential decay that is
, we have N=
,
and k=0.1374.
Thus,
becomes



Taking log on both sides, we get




Answer:
135
Step-by-step explanation:
30÷2≡15
<h3>15×9≡135</h3>