Answer:
10000.
Step-by-step explanation:
i think.. i may be wrong.
1) 0.5m . 2 = 1 meter
2) 4.70$
3) (r^2) / 2 = 81/2 = 40.5m^2
Answer:

Step-by-step explanation:
Given: GCF of two numbers is
. neither number is divisible by the other.
To Find: smallest of these two number.
Solution:
As GCF of two numbers is
, both number are divisible by
.
Prime factor of

multiples of
are 


GCF of all three multiples is
,
Here
and
are the two multiples whose GCF is
and neither is divisible by other
Hence the smallest of two is
, the answer is 
Answer:
69.92°F
Step-by-step explanation:
Given:
Initial temperature ( i.e at time, t = 0) = 40°F
Temperature of the room = 70°F
Temperature after 10 minutes ( i.e at time t = 10 ) = 48°F
Now, from Newton's law of cooling
T'(t) = k(A - T(t))
T(t) temperature after time t
T'(t) =
here, A is the room temperature
thus,
= k(70 - T)
or
= kdt
on solving the differential equation, we get
T =
............(1)
Now from the boundary conditions,
i.e at time, t = 0; T = 40°F
we get,
40 = 
or
C = 30
and,
at time, t = 10; T = 48°F
thus,
48 = 
or
k =
or
k = 0.03
Therefore,
for t = 25
from 1 we have
T = 
or
T = 70 - 0.0780
or
T = 69.92°F
13
He has $170 minus the $25.50 fee= $144.50 left. If each session is $10.50, then divide 144.50 by $10.50 and you get 13.76. He will have enough for 13 help sessions