Hello!
A sample of Bromine-82 begins at 80 mL. We are given that this value will decrease by half of its current amount every 35 hours. First, we'll determine the number of times that 35 goes into 140. This will reveal the number of times we should divide the sample by 2:
140 ÷ 35 = 4
We have now proven that there are 4 periods of 35 hours in 140 hours. This means that we will divide the sample in half a total of 4 times, as follows:
1. 80 ÷ 2 = 40
2. 40 ÷ 2 = 20
3. 20 ÷ 2 = 10
4. 10 ÷ 2 = 5
We have now proven that an 80 mL sample of Bromine-82 will be reduced to only 5 mL after 140 hours. Therefore, the correct answer is 5 mL.
I hope this helps!
S=d/t
s=8.45km/0.65hr
s= 13km/hr
Therefore the speed is 13km/h.
Hope that helps :)
The minimum distance between the point(-3,2) and the line y = -x + 1 is
units.
<h3>What is a line segment?</h3>
The line that joins two points on a cartesian plane is a line segment.
Analysis:
The formula for calculating distance between a line and a point is
d = 
where A = coefficient of x term of the line, B = coefficient of y in the line and C is the constant term of the line.
x1 and y1 are coordinates of the point.
for the line y = -x + 1 which is = y + x -1 = 0, A = 1, B = 1, C = -1, x1 = -3, y = 2
d =
=
units
In conclusion, the distance between the point and the line is
units
Learn more about distance between line segments: brainly.com/question/2437195
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Answer:
mb = 30
Step-by-step explanation:
i got it from me school
(16y6)3 - (10z2)3 I think is the right answer