Answer:
24.9 repeating in
Step-by-step explanation:
![\sqrt[3]{15,625}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B15%2C625%7D)
= 24.9 repeating.
Basically, just find the cube root of 15,625. Since, the object is a cube, the volume formula is V=
. Just undo the by finding the cube root. Hope this helps!!
Answer:
268 mg
Step-by-step explanation:
Let A₀ = the original amount of caffeine
The amount remaining after one half-life is ½A₀.
After two half-lives, the amount remaining is ½ ×½A₀ = (½)²A₀.
After three half-lives, the amount remaining is ½ ×(½)²A₀ = (½)³A₀.
We can write a general formula for the amount remaining:
A =A₀(½)ⁿ
where n is the number of half-lives
.
n = t/t_½
Data:
A₀ = 800 mg
t₁ = 10 a.m.
t₂ = 7 p.m.
t_½ = 5.7 h
Calculations:
(a) Calculate t
t = t₂ - t₁ = 7 p.m. - 10 a.m. = 19:00 - 10:00 = 9:00 = 9.00 h
(b) Calculate n
n = 9.00/5.7 = 1.58
(b) Calculate A
A = 800 × (½)^1.58 = 800 × 0.334 = 268 mg
You will still have 268 mg of caffeine in your body at 10 p.m.
Answer:
what grade?
Step-by-step explanation:
I think it’s the second option, hope this helps. If it’s correct please give brainliest
Answer:
m(angle1)=79-39=40
m(angle2)=79+61=140
Step-by-step explanation:
m(angle1)+m(angle2)=180
x-39+x+61=180
2x=158
x=79
m(angle1)=79-39=40
m(angle2)=79+61=140
