To simplify the problem imagine the half-life was 2.5 minutes. This means that there would be 10/2.5=4 periods of halving the mass, which means 1/2⁴=1/16 of 18g=1.125g.
So for the given half-life we calculate 10/2.552=3.9185 approx. So we now find 2 to this power=15.1211 approx and divide into 18=1.19g. This is close to the rough estimate we did earlier.
The XYZ affairs
and it what said by Robert Goodloe Harper
Answer:
Maybe...
Not much sure..
If it is factorisation then it's correct...
Step-by-step explanation:
x×x-2×7×X+5×9
X(x-14+45)
X(x-31) Answer...
hope it helps
Angle 1 and angle 2 are what are called alternate angles. Two opposite angles between parallel lines. this means they are equal to each other.
So we have an equation: 2x + 20 = 3x + 10
Subtract 2x and 10 from each side
We now have 10 = x, so we know what x is
now plug in x to angle 1: (2 x 10) + 20 = 40, so angle 1 = 40.
I believe this would be a triangular prism