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.
Answer:
#2: 26 #3: 68 #4) 19 #5) 23
Step-by-step explanation:
#2) So, 208 divided by 8 = 26
#3) 92 - 24 = 68
#4) 76(.75) = 57, 76-57 = 19
#5) 31 - 8 = 23
Hope i helped.
1.
15h = 75
15h/15 = 75/15
h = 5
2.
-d = -6
-d(-1) = -6(-1)
d = 6
3.
5k = 25
5k/5 = 25/5
k = 5
4.
13 = -x/2
-x/2 = 13
-x/2 * (-2) = 13 * (-2)
x = -26