Answer:
200+12x=644
Step-by-step explanation:
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Answer:
a. yˆ=38,000+2500x
d. yˆ=38,000−1500x
Step-by-step explanation:
The least squares regression line for the population change of a small country has the following format:
In which a is the initial population and b is the number of habitants for which the population increases/decreases a year.
Let's see each case
a. yˆ=38,000+2500x
The population starts at 38000 and increases by 2500 a year. This is a feasible assumption.
b. yˆ=38,000−3500x
The population starts at 38000 and increases by 3500 a year. By the year 2015, the population will be negative. This is not a feasible assumption.
c. yˆ=−38,000+2500x
The population cannot start at a negative value. So this is not a feasible assumption.
d. yˆ=38,000−1500x
The population starts at 38000 and decreases by 1500 a year. This is a feasible assumption.
Answer:
the answer is C
Step-by-step explanation:
i had a test that had this same question. Hope this Helps!!! :)
Answer: y = 7, y = -1
<u>Step-by-step explanation:</u>
Since both A and B lie on the circle, their distances to the origin is the radius which will be equal.
Answer the shopping cart had a velocity of 3 m/s as it moved across the parking lot.
Step-by-step explanation:
The time taken for this displacement is 5.2 seconds. So, the velocity of the shopping cart can be estimated by the above mentioned relation as, velocity of shopping cart = 15.6 m / 5.2 s = 3 m/s.