1. (-3, -5)
2. (x-3)2+(y-2)2=4
3. (-2,1), r=3
4. (x+1)2+(y-2)2=1
To find an equation for a circle from its graph, just look at the circle and if you have a centre at a point P(a,b) and a radius r, then your equation will be (x-a)2+(y-b)2=r2. Use the reverse process to draw a graph of a circle from its equation.
1) 1500×0.0425=63.75
2) 127.50÷63.75=2
Answer is 2 year.
To calculate the value of the half life we proceed as follows;
a/2=ae^(-2.360t)
the a(s) will cancel and we shall remain with:
1/2=e^-2.360t
introducing the natural logs we get:
ln (1/2)=ln e^(-2.360t)
ln(1/2)=-2.360t
hence;
t=(ln 0.5)/(-2.360)
t=0.294
the answer is t=0.294
Answer:
Step-by-step explanation:
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