Given f(x) = 7x + 21 and g(x) = 7x + 7 .
determine (f -1◦g)-1(3)
you guys

The Ryotwari system was introduced by Sir Thomas Munro and Captain Alexander Reed in 1820.This system was in operation for nearly 30 years and had many features of revenue system of the Mughals. It was instituted in some parts of British India, one of the two main systems used to collect revenues from the cultivators of agricultural land. These taxes included undifferentiated land revenue and rents, collected simultaneously. Where the land revenue was imposed directly on the ryots (the individual cultivators who actually worked the land) the system of assessment was known as Ryotwari. Where the land revenue was imposed indirectly—through agreements made with Zamindars -- the system of assessment was known as zamindari. In Bombay, Madras, Assam and Burma the Zamindar usually did not have a position as a middleman between the government and the farmer.

Step-by-step explanation:

answer:

Let  tan−1(1)=x

⇒1=tanx

Let  tan−1(2)=y

⇒2=tany

Let  tan−1(3)=z

⇒3=tanz

tan(x+y+z)=1−tanx.tany−tanx.tanz−tany.tanztanx+tany+tanz−tanx.tany.tanz

=1−1×2−1×3−2×31+2+3−1×2×3

=0

⇒x+y+z=π

 tan−1(1)+tan−1(2)+tan−1(3)=π

(  x+y+z  cannot be equal to zero, because

 tan−1(1)+tan−1(2)+tan−1(3) will have some value greater than zero )

Step-by-step explanation:

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answer:

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Explanation:

2 _ 4.3 × 10 - 22 kg

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find the smallest volume of oxygen needed to burn 1dm3 of ethane completely

I think that you have to go with the option c

I) h(-7) = -7+4= 3

ii) f[g(2)] = f[5*2+2] = f[12]=3*12-1= 36-1=35

iii) h[f(-1)]=h[3*(-1)-1]= h[-4]= -4+4= 0

iv) f[h(x)]= f[x +4 ]= 3(x+4)-1= 3x+12-1= 3x+11

vi) unable to understand the question

i the answer can be 6 and 18