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kifflom [539]
4 years ago
11

(7x-3) = (12x-7) solve for x

Mathematics
2 answers:
nlexa [21]4 years ago
4 0
7x-3=12x-7
12x-7x=7-3
5x=4
x=4/5
laiz [17]4 years ago
3 0
7x - 3 = 12x - 7
-3 + 7 = 12x - 7x
4 = 5x
x = 4/5
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3 years ago
True or False. To select 3 items out of 4 distinct objects, use C(4,3).
kenny6666 [7]

Answer:

True.

Step-by-step explanation:

C(4, 3) means the number of combinations from 4 items taking 3 at a time.  We are selecting 3 distinct items and it doesn't say anything about the order in which they are selected , so we use  a combination formula  not a permutation ( where order does matter).

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yaroslaw [1]

Answer:

\sqrt{145}

Step-by-step explanation:

Hi there!

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The distance formula is given as \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}, where (x_1, y_1) and (x_2, y_2) are points

We have 2 points, which is what we need to find the distance, but let's label their values to avoid any confusion

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Now substitute those values into the formula:

\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

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Simplify the values under the radical:

\sqrt{(-8)^2+(-9)^2}

Raise to the second power:

\sqrt{64+81}

Add the numbers under the radical together

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The answer can be left as that, as the radical cannot be simplified.

Hope this helps!

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3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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