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2 answers:
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Answer:
B.
Step-by-step explanation:
= (x + y)(x - y)
So, if x + y = 7/10, and x - y = 5/14, = (7/10) * (5/14) = 35/140 = 1/4.
(1/2)^2 = 1/4
So, (B) (1/2)^2 is your answer!
Hope this helps!
Answer:
In the year 2010, the population of the city was 175,000
Step-by-step explanation:
If we rewrote this as a linear expression in standard form (it is linear, btw), it would look like this:
The rate of change, the slope of this line, is 11/2. If the year 2010 is our time zero (in other words, we start the clock at that year), then 0 time has gone by in the year 2010. In the year 2011, t = 1 (one year goes by from 2010 to 2011); in the year 2012, t = 2 (two years have gone by from 2010 to 2012), etc. If we plug in a 0 for t we get that y = 175,000. That is our y-intercept, which also serves to give us the starting amount of something time-related when NO time has gone by.