If car can travel 50 miles in 55 minutes, how long will it take to travel 75 miles ?
1 answer:
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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.
Answer:
of the lasagna is left
<u>Step-by-step explanation:</u>
Given:
Amount of lasagna Rico eats = 1/9
Amount of lasagna His friend eats = 1/18
To Find:
The amount lasagna is left =?
Solution:
Total lasagna ate by both Rico and his friend = Amount of lasagna Rico eats + Amount of lasagna His friend eats
Total lasagna ate by both Rico and his friend =
Total lasagna ate by both Rico and his friend =
Total lasagna ate by both Rico and his friend =
Total lasagna ate by both Rico and his friend =
The amount lasagna is left = 1 - Total lasagna ate by both Rico and his friend.
The amount lasagna is left =
The amount lasagna is left =
The amount lasagna is left =