Answer:
A
Step-by-step explanation:
clearly, the equation has to allow t=0, and for that point we need to get 100% (of carbon-14) as result.
and so we also see, that the function calculates the % of the remaining carbon-14.
so, we need the desired outcome 60(%),
because 60 = 100 - 40.
and again, we need a function that shows t=0.
the only answer option fulfilling both criteria is A.
B divides in the exponent by t, so t=0 is not in the domain of the function.
and C and D aim for the wrong remaining percentage.
Answer:
y=2x+3
Step-by-step explanation:
y-2x=3
y=2x+3
The midpoint is (-1/2, 2)
Answer:
x = 12 , y = 60
Step-by-step explanation:
The figure has 2 pairs of parallel sides and is therefore a parallelogram.
The opposite sides and opposite angles are congruent , then
x + 3 = 15 ( subtract 3 from both sides )
x = 12
and y = 60
