You can't simplify this problem any further because there are no more like terms
The first one is C. 68. The second one is B. 7. The third one is x = 21. The fourth one is CD = 10
A) $1195 + 128(6 chairs)
= $1195 + 768
= $1963
B) 3756 - 1963 = 1793
Answer:
2x+3y=5
Step-by-step explanation:
We know that
<span>This problem can be represented through the following equation
</span>
A = A₀(1/2)^t/h
where
A-----------> is the amount of substance left after time t
A₀ ----------> is the original amount---------> 2 g
h-------------> is the half-life-----------> 8 days
for A=0.04 g
t=?
0.04 = 2(1/2)^t/8
0.02 = (1/2)^t/8
Take ln on both sides:
ln(0.02) = ln [(1/2)^t/8]
ln(0.02) = (t/8)(ln 1/2)
t = 8*ln(0.02)/ln(1/2)
t = 45.15 days
the answer is 45.15 days
