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lcdavis16
04.08.2021 •
Mathematics
2. Estimate the quotient: 6.31 x 105 - 2.085 x 103
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Ответ:
Estimate: Around 445 or 450
Step-by-step explanation:
If we multiply the whole expression we get
=. Rounding it down gets us
but we can also round up to
. So, we can estimate the quotient as
(or if your picky, then also 445)
(Hopefully this helped! If you think I misinterupted or if I got this wrong, please tell me and I will fix my answer as soon as possible.)
Ответ:
The initial value is 150, and it represents the number of songs she wants to download to begin with.
B) y = -30x + 150
Explanation
A) The rate of change can be found by using the slope formula between the first two points, (0, 150) and (1, 120):
m=(y₂-y₁)/(x₂-x₁) = (120-150)/(1-0) = -30/1 = -30
The initial value is the y-value of the first point on the graph, (0, 150).
B) The equation is in slope-intercept form, y=mx+b, where m represents the slope and b represents the y-intercept. The slope is the rate of change that we found in part A; the y-intercept is the initial value we found in part A. This gives us the equation y=-30x+150.