3 years ago

The difference of twice a number and 7 is 20. Find the number.

Mathematics

1 answer:

Paul [167]3 years ago

4 0

Answer:

twice the difference gives 2(difference). 7 = 14 20 = 40

Step-by-step explanation:

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3 years ago

What is the constant rate of change in the equation d = 55t?

IRINA_888 [86]

keeping in mind that the slope goes by several names

• average rate of change

• rate of change

• deltaY over deltaX

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• rise over run

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however, is the same cat wearing different costumes.

$\bf d=55t\implies d=\stackrel{\stackrel{m}{\downarrow }}{55}t+0\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}$

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