Answer:
x > -1
Step-by-step explanation:
Because the altitude of parallelogram is perpendicular to the base and it is the height of the parallelogram so in this way every choices B. and C. are right sure
but than you check so choice - but there is something mistake bc. you wrote two choices D. so the second what say ,,it is used in finding area of a parallelogram" is right too
hope helped
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
Answer:
the answer is h = 5 / 9.
Step-by-step explanation:
Given is "negative one over two equals negative five over eighteen h"
It means -1 / 2 = -5 / 18h
Using cross multiplication method,
-1 * 18h = -5 * 2
-18h = -10
Cancelling negative signs from both sides,
18h = 10
Dividing both sides by 18,
h = 10 / 18
h = 5/ 9
Hence, the answer is h = 5 / 9.
