Derek would have planted the tree 7 years ago. You subtract 36 from 44.75 and get 8.75. This is how much the tree grew since he planted it. Then, you'll divide 8.75 by 1.25 (1 1/4) which tells you how many years it has been since he planted the tree. The final answer is 7 years. Hope this helps!
Answer:
with the information you have given, the first coordinate is this:
Step-by-step explanation:
A first coordinate is on a graph, and it is the first dot, or coordinate set on the plane.
~Ren
Answer:
Graph A
hope it helps
Step-by-step explanation:
Answer:
a.
b
Step-by-step explanation:
1.
Auxillary equation


D=2,2
Then complementary solution =
Particular solution 
D is replace by D+2 then we get
P.I=
P.I=
where V is a function of x
P.I=
By integrating two times
Hence, the general solution

b.y''+9y=5 cos x-7 sin x
Auxillary equation

D=

P.I=
P.I=
Then D square is replace by -a square
is replace by - then we get
P.I=-5 cos x+7 sin x
The general solution

Answer:
It will take the train 1.2375 minutes to pass the tunnel
Step-by-step explanation:
Mathematically, we know that ;
time = distance/ speed
The distance here is the length of the train which is 132 m ; we can convert this to km by dividing by 1000
We have this as 132/1000 = 0.132 km
So, we have the time as;
0.132 km/6.4 km/hr = 0.020625 hr
Mathematically, we know that 60 minutes make an hour;
so we have
0.020625 * 60 = 1.2375 minutes