30 = arc BC / 2
arc BC = 2(30)
arc BC = 60
answer
D. 60
The decay of 277 mg of an isotope is described by the function
A(t)= 277e-0.019t,
where t is time in years.
To find the amount left after 64 years,
We substitute t = 64 in the expression.
A(t=64)= 277e-0.019(64)
or A(t=64) = 277 * e-1.216
= 277 * 0.29
= 82 mg
Answer:
A. 0 = (-x) + x
Step-by-step explanation:
Adding opposites results in zero.
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<em>Comment on the other answer choice</em>
Of course, x + x = 2x. This will only be zero if x is zero.
Answer:
Slope = -4
Step-by-step explanation:
The slope is negative because the line is going down.
The line goes down 4 times and goes right once = 4