Answer:
128 m^2
Step-by-step explanation:
You have 5 sides of a cube on the bottom with length 4
5 * 4x4 = 80 m^2
then four triangles on top
area of triangle = 1/2 base * height base = 4 height = 6
4 * 1/2 ( 4)(6) = 48 m^2
summed = 128 m^2
5 less (-5) than 1/3 of number (n/3) is (=) 2 more than (2+) half of the number (n/2)
-5+n/3=2+n/2
add 5 to both sides
n/3=n/2+7
times 6 both sides
2n=3n+42
minus 2n both sides
0=n+42
minus 42 boh sides
-42=n
the number is -42
the number is 18
B(t)=50×e^2.5t
e^2.5t = 20
t= ln(20) / 2.5
set B(t)=1000 and solve for t via 1000=50e2.5t
20=e2.5t
ln(20)=2.5t
t=ln(20) / 2.5
Answer:
72901090
Step-by-step explanation: