What is the area of the composite figure?
2 answers:
Answer:
area of the compostie figure = 34 squre units
Step-by-step explanation:
To find the area of this composite figure , first find the area of the trapezoid
then we subtract the area of rectangle (white part of the figure at the bottom)
Area of the trapezoid = (base1+base2)/2 times height
base 1= 10
base 2=6, height = 5
Area of a trapezoid = = 40
Area of the rectangle = length * width
= 3*2= 6
Now area of the compostie figure = 40 - 6= 34 squre units
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Answer:
The world population at the beginning of 2019 will be of 7.45 billion people.
Step-by-step explanation:
The world population can be modeled by the following equation.
In which Q(t) is the population in t years after 1980, in billions, Q(0) is the initial population and r is the growth rate.
The world population at the beginning of 1980 was 4.5 billion. Assuming that the population continued to grow at the rate of approximately 1.3%/year.
This means that
So
What will the world population be at the beginning of 2019 ?
2019 - 1980 = 39. So this is Q(39).
The world population at the beginning of 2019 will be of 7.45 billion people.