Answer:
I think it is B
Step-by-step explanation:
mark me brainliest
Answer:
9 hours
Step-by-step explanation:
1 chapter ≈ .5 hour
18 x .5 = 9
it's B why they need me to write something long the answer is ez B
Step-by-step explanation:
it f common sense
Answer:
P= 30 cm
Step-by-step explanation:
Formula for Rectangle Perimeter P=2(l+w)
P=2(10+5)
P=2(15)
P=30
Integration will be ln | ( x /9 ) + (
) | + c .
Given ∫ 1 dx / (
- 81 )
Put ,
x = 9 secθ
dx = 9 secθ tanθ dθ
and
= 9 tanθ
Substituting values in ∫ 1 dx / (
- 81 ) ,
∫ (9 secθ tanθ ) dθ / ( 9 tanθ )
∫ secθ dθ = ln | secθ + tanθ | + c
= ln | ( x /9 ) + (
/ 9 ) | + c
= ln | ( x /9 ) + (
) | + c
Hence , the integration will be ln | ( x /9 ) + (
) | + c .
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