I don't know what the first two blanks are asking for, but the last one should be Alternate Exterior Angles Property of Congruence (AEAPC).
A geologist in South America discovers a bird skeleton that contains 80% of its original amount of C-14
We use formula 
N0= initial amont of C-14 (at time t=0)
N= amount of C-14 at time t
t= time, in years
k= 0.0001
N is 80% of N0 that is 
Divide both sides by N_o
Take ln on both sides
ln(0.8) = -0.0001t ln(e)
ln(0.8) = -0.0001t
Divide both sides by -0.001
t = 2231.435513
The age of the bird skeleton is 2231 years old
I honestly don’t know, Try to do Y2-Y1 and X2-X1 to get your answer.
Answer:
D. (2,-3)
Step-by-step explanation:
if you substitute 2 for the x value and -3 for the y value in both equations, it works out.
instead of y=3x-9 it would be -3=3(2)-9.
you solve and get -3=-3, so it's a solution.
and instead of y=-2x+1 it would be -3=2(2)+1. after solving it, you would get -3=-3 again, so it works for both equations.
Answer:
A. 16 m
B. At t = 2 and t = 6
C. 8 seconds
Step-by-step explanation:
Maximum height is at the vertex
(4,16). So maximum height is 16 m at t = 4
The rocket is at a height of 12m at two distinct times:
At 2 seconds and again at 6 seconds
The rocket is in air when the height is not zero, I.e between t=0 and t=8
8-0 = 8 seconds
