Use photomath or something
Answer:
An old bone contains 80% of its original carbon-14 in 1844.6479 years
Step-by-step explanation:
We know that
half life time of C-14 is 5730 years
so, h=5730
now, we can use formula

we can plug back h
and we get

An old bone contains 80% of its original carbon-14
so,
P(t)=0.80Po
we can plug it and then we solve for t





So,
An old bone contains 80% of its original carbon-14 in 1844.6479 years
Answer:
p and q are parallel to each other and l, m, and n are all parallel
Step-by-step explanation:
because it tells us they make right angles we know all the lines are going straight therefor they will not intersect with each other
Answer:
Step-by-step explanation:
Answer:
56.6mm
Step-by-step explanation:
Take the radius and double it to get the diameter
9mm * 2 = 18mm
Multiply the diameter by pi to get the circumference of the circle
18mm * 3.1415 = 56.547mm