Formula= Base times height divided by 2
6 x 7= 42
42/ 2
answer= 21
Answer:
y =
+ 
Step-by-step explanation:
y''- 9 y' + 18 y = t²
solution of ordinary differential equation
using characteristics equation
m² - 9 m + 18 = 0
m² - 3 m - 6 m+ 18 = 0
(m-3)(m-6) = 0
m = 3,6
C.F. = 
now calculating P.I.


hence the complete solution
y = C.F. + P.I.
y =
+ 
Step-by-step explanation:
ok so just take 4×10=40
-6^40=20

That should be your final answer.
Hope this helps!