4x = 14y
y = 4/14(x)
y = 2/7(x) slope = 2/7
<span>-2x+7y=14
7y = 2x + 14
y = 2/7(x) + 2 slope = 2/7
parallel lines, slope is the same
both lines have slopes equal 2/7
answer
</span><span>parallel</span>
This problem can be represented through the following equation
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
Look at the image attached to my answer.
When x is 12 for the first graph, we see that y is roughly 9. When x is 12 for the second graph, we see that y is roughly 3.
Thus, the value of y decreased from 9 to 3 after the change was applied to line M.
Let me know if you need any clarifications, thanks!
~ Padoru
56+49=105 105 students
56 divided by 8 = 7 so u do 7 times 7 and u get 49. add 56 and 49 and u get the answer