So the answer is -3/50 because -0.06 is equal to -6/100 and that simplified is -3/50.
Answer:
B.64 miles
Step-by-step explanation:
Let Oliver's be x
Let Stephanie's be y
substitute for x in (b):
find x in (a):
Answer:
I think that it may be 33
Because, you see 15-9=6
so you do 20-9=11
Then you do 25-9=16
add them all together to get 33 so i think that's the perimeter
I am really not sure if this is correct...i'm kinda bad at stuff like this
Answer:
The correct answer is x= 4/5 because you cannot take the root of a negative number
For this case we have an equation of the form:
y = A * (b) ^ t
Where,
A: initial amount
b: decrease rate
t: time in years.
Substituting values we have:
7 = A * (0.5) ^ ((1/20) * t)
For t = 45 years we have:
7 = A * (0.5) ^ ((1/20) * 45)
Clearing A:
A = 7 / ((0.5) ^ ((1/20) * 45))
A = 33.3
Answer:
the density of the substance when it was deposited 45 years ago was:
A = 33.3 milligrams per square centimeter
