It hase to be le letter c
They are both the same equations, the procedure to obtain x value will be equivalent.
Answer:
48 pens
Step-by-step explanation:
6 times 8 is 48,
sam ordered 48 pens
Answer:
Step-by-step explanation:
is the expression given to be solved.
First of all let us have a look at <u>3 formulas</u>:
Both the formula can be applied to the expression() during the first step while solving it.
<u>Applying formula (1):</u>
Comparing the terms of 
with 
So, is reduced to
<u>Applying formula (2):</u>
Comparing the terms of with 
So, is reduced to .
So, the answers can be:
Answer:
0.75 mg
Step-by-step explanation:
From the question given above the following data were obtained:
Original amount (N₀) = 1.5 mg
Half-life (t₁/₂) = 6 years
Time (t) = 6 years
Amount remaining (N) =.?
Next, we shall determine the number of half-lives that has elapse. This can be obtained as follow:
Half-life (t₁/₂) = 6 years
Time (t) = 6 years
Number of half-lives (n) =?
n = t / t₁/₂
n = 6/6
n = 1
Finally, we shall determine the amount of the sample remaining after 6 years (i.e 1 half-life) as follow:
Original amount (N₀) = 1.5 mg
Half-life (t₁/₂) = 6 years
Number of half-lives (n) = 1
Amount remaining (N) =.?
N = 1/2ⁿ × N₀
N = 1/2¹ × 1.5
N = 1/2 × 1.5
N = 0.5 × 1.5
N = 0.75 mg
Thus, 0.75 mg of the sample is remaining.
