math worksheet
1 x+2=4
2 x+3+x=7
3 find x here it is - x
Answer:
The equation is .
0.4713 grams would remain in the tumor after 8.5 days.
Step-by-step explanation:
Exponential equation of decay:
The exponential equation for the amount of a substance that decays, after t days, is given by:
In which A(0) is the initial amount and r is the decay rate, as a decimal.
A tumor is injected with 0.52 grams of Iodine-125.
This means that
After 1 day, the amount of Iodine-125 has decreased by 1.15%.
This means that
So
Then use the formula for A(t) to find the amount of Iodine-125 that would remain in the tumor after 8.5 days.
This is A(8.5).
0.4713 grams would remain in the tumor after 8.5 days.
solution:
x˄2 = a ⇒ x = ±√a
The difference between the solutions is
√a - (-√a) = 2√a = 30 ⇒ √a = 15
Therefore,
a = 225.
Answer:b
Step-by-step explanation:
Your answer will be be because when you subtract 314 is one ask but instead of one actually just put one