Answer:
6.3 days
Step-by-step explanation:
The decay formula is
N(t) = N₀ exp(-kt)
where
N₀ = 45 g, original mass
N(t) = mass after time t, days
k = 0.1109, the decay constant.
At half life, N(t) = (1/2)*N₀. Therefore
1/2 = exp(-0.1109t)
Take natural log of each side.
ln(0.5) = -0.1109t
t = ln(0.5)/(-0.1109) = 6.25 days
Answer: 6.3 days (nearest tenth)
Letting x be the number of dvds, you could use the equation 8x + 12 = 84 to solve it, which would give you x = 9
We can use the points (-4, -1) and (-8, 7) to solve.
Slope formula: y2-y1/x2-x1
= 7-(-1)/-8-(-4)
= 8/-4
= -2
Find the y-intercept.
y = 2x + b
-1 = 2(-4) + b
-1 = -8 + b
-1 + 8 = -8 + b + 8
7 = b
Now, put in slope-intercept form.
y = -2x + 7
Hope This Helped! Good Luck!
From Smallest to Largest is :
,7/10,2/5,and 1/8
It is 370 because when you add you get 370 hope that helps