Suppose the radius of a circle is 5. What is its circumference?
2 answers:
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The first thing we must do for this case is to define variables:
We have then:
x: liz's age
y: melinda's age
We now write the system of equations:
By solving the system graphically we have that the age of each one is currently:
Next year, the age of liz is:
Answer:
Next year, Liz's age is 11 years.
Note: see attached image for the graphic solution.
We have then:
x: liz's age
y: melinda's age
We now write the system of equations:
By solving the system graphically we have that the age of each one is currently:
Next year, the age of liz is:
Answer:
Next year, Liz's age is 11 years.
Note: see attached image for the graphic solution.
Answer:
B) 0.42
Step-by-step explanation:
population density=number of people/square units
we plug in 2,100 for the first one but we don't know the second one for that we need the area which is A=π so the radius is 40 millimeters so
=1600 1600*π=5024
2,100/5024=0.417 round it up and it is 0.42
so B) 0.42 is the answer