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Vsevolod [243]
4 years ago
5

Find the percent of decrease. Round to the nearest tenth, if necessary. from 49 ft to 22 ft

Mathematics
1 answer:
Marta_Voda [28]4 years ago
4 0
Decrease = (original number - new number) / original number .....x 100
decrease = (49 - 22) / 49.....* 100 =
                    (27 / 49) * 100 =
                     2700 / 49 = 55% decrease
                   
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3 years ago
Express the square root of -80 in its simplest terms.
spin [16.1K]

Answer:

C

Step-by-step explanation:

noting that \sqrt{-1} = i

Given

\sqrt{-80}

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4 0
3 years ago
X + 3y = 12 2 x - 4 y = 4solve by graphing.
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\begin{gathered} x+3y=12 \\ 2x-4y=4 \end{gathered}\begin{gathered} x=12-3y \\  \\ 2(12-3y)-4y=4 \\ 24-6y-4y=4 \\ 24-10y=4 \\ -10y=-20 \\ y=2 \\  \\ x=12-3(2) \\ x=12-6 \\ x=6 \end{gathered}

By graphing

4 0
1 year ago
Write the equation of the line in slope-intercept form
meriva

Answer:

y = 20 + 40x

Step-by-step explanation:

You can see that where x = 0, y = 20, which gives us the y intercept. We can also see that for each step on the grid, x increases by 0.5, and y increases by 20.  Which means that y increases at a rate of 20/0.5 - or 40 - with respect to x.

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