Six more than four times a number is equal to eight added to three times the same number. Find the number
1 answer:
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For the first one:
The radian of 60º is 1.047. you just have to find one that has the same value, which would be /3. (the last choice).
for the second one:
you do it the other way. The answer is 45 degrees.
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.