Answer:94%
Step-by-step explanation:
Half life of a radioactive element is the time taken for half it's mass to disintegrate away.it means after attaining half life,what will be left is 100-50=50%.
Let the 100% mass of C-14,be x
Then 5730years=1/2 of X
Then 660 years=y of X
Where Y is the fraction of C-14 that has disintegrate as at 1988.
5730/660=1/2X/yX
5730/660=1/2/y
Cross multiplying
5730×y=660×1/2
5730y=330
Y=330/5730=0.05759
In %,5.76%
Amount of C-14 left is
100-5.76=94.24=94% as at 1988.
D, because we already know how much he spent in total so it isnt B, trust me its D
Divide 38,000 by 5 then that gives u 7,600 then u know that every year there are 365 days,so divide that by 5 gives u 73,find 2% of 73.
I know that this is an old question, but I'll add my input for future reference. The graph shown above is B) This is a function (as it passes the vertical line test), but it is NOT a one-to-one, as it fails the horizontal line test.
Answer:
$208.30
Step-by-step explanation:
<h2>Discount:</h2>
Let the original price be $ x
Discount % = 12%
Discount = $ 25
12% of x = 25
= $ 208.30
