Answer:
4) 0.001
Step-by-step explanation:
The amount (a) present in h hours is ...
a(h) = (initial value)×(1/2)^(h/(half-life))
6 days is 6×24 hours, so the amount remaining is ...
a(6×24) = 50×(1/2)^(6×24/9) = 50/2^16 ≈ 0.001 . . . . milligrams
Answer:
what grade are you in
Step-by-step explanation:
The answer is D. I graphed it on this website called desmos. The solution is where the lines intersect.
3x-4y=12
4y=3x-12
y=(3x-12)/4
y=(3/4)x-3

Subtract 3 from both sides,

Let x = X and y - 3 = Y
Then,

So, we have shifted the origin to a point (0, 3).
This is an odd function and the graph of an odd function is symmetrical about the origin.
That is, symmetrical about X = 0, Y = 0
Symmetrical about x = 0,, y - 3 = 0
Symmetrical about x = 0, y = 3.
Hence, the graph is symmetrical about the point (0, 3).