9514 1404 393
Answer:
6.2
Step-by-step explanation:
We presume your "k-value" is the k in the exponential decay term ...
e^(-kt) . . . where t is the number of time units
This is 1/2 when ...
ln(1/2) = -kt
t = ln(1/2)/(-k) = ln(2)/k
t = 0.69315/0.1124 ≈ 6.2
The half life is about 6.2 time units.
Answer:
it is c
Step-by-step explanation:
c
15x+40=115
15x means 15 per week solve for x if you want to know how many weeks 40 is what he has only once
The area of the shaded region is 15.453 square units.
Step-by-step explanation:
Step 1:
The given shape consists of a rectangle and two circles.
The length of the rectangle is given as 12 cm. Both the diameters of the circles equal 12 cm. So each circle has a diameter of 6 cm and thus a radius of 3 cm.
The diameter of the circle is equal to the width of the rectangle.
So the rectangle has a length of 12 cm and a width of 6 cm. The circles have radii of 3 cm each.
Step 2:
The area of the rectangle
square cm.
The area of each circle
square cm.
The area of both circles
square cm.
The area of the shaded region is the difference between the area of the rectangle and the area of both circles.
The area of the shaded region
square units.
The area of the shaded region is 15.453 square units.
The least She will have to buy is 64 feet of fencing.
Hope that helps.