Question

21 (a) Differentiate 6+ 4x-x?.
(b) Find the coordinates of the turning point of the graph of y = 6 + 4x – r?.

Answer 1

Answer:

Given that,

4x+y=6

y=6−4x

or(ΔAOB)=21×b×h

=21×23×6

=418

=29 sq units.

please drop some ❤❤❤

Step-by-step explanation:

please f-o-l-l-o-w m-e

Answer 2

Step-by-step explanation:

1) Compounded Annually :

P=Rs.80000

R=10% p.a.

T=121 years ⟹n=1+21

Amount for 1st year.

A=P[1+100R]n

     =Rs.80000[1+10010]=Rs.88000

SI on Rs. 88000 for next 1/2 year 

=Rs.88000×10010×21=Rs.4400

Therefore, Amount = Rs.88000+Rs.4400 = 92400Rs.

2) Compounded half yearly :

P=Rs.80000

R=10% p.a.=5% per half year

T=121 years ⟹n=3

A=Rs.80000[1+1005]3

A=Rs.92610

Thus, the difference between the two amounts = Rs.92610−Rs.92400 =Rs.210