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Molodets [167]
3 years ago
8

Simplify the following algebraic expression 5x– 4у + 3y+8y – 7х​

Mathematics
1 answer:
Margarita [4]3 years ago
4 0

Answer:

<h2><em><u>-2x</u></em><em><u> </u></em><em><u>+</u></em><em><u> </u></em><em><u>7y</u></em></h2>

Step-by-step explanation:

<em><u>Given</u></em><em><u>, </u></em>

5x– 4у + 3y+8y – 7х

<em>[Bringing like terms together]</em>

= 5x - 7x - 4y + 3y + 8y

<em>[</em><em>Adding</em><em> </em><em>and</em><em> </em><em>subtracting</em><em> </em><em>the</em><em> </em><em>like</em><em> </em><em>terms</em><em>]</em>

= <em><u>- 2x + 7y (Ans)</u></em>

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2 years ago
Christina wants to compute the cost of tiling the floor in her bathroom. The floor measures 7 feet 6 inches by 8 feet 10 inches.
ArbitrLikvidat [17]

Answer:

Two boxes will cost \$35.95\cdot 2=\$71.9. The cost of one tile is approximately \dfrac{\$71.9}{67}\approx \$1.08.

Step-by-step explanation:

Note that 1 ft = 12 in, then

7\ ft\ 6\ in=7\cdot 12+6\ in =90\ in,\\ \\8\ ft\ 10\ in=8\cdot 12+10\ in=106\ in.

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Now

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tiles is needed to cover the floor (67 full tiles).

Each box of tiles contains 45 tiles, so Cristina has to buy 2 boxes. These two boxes will cost \$35.95\cdot 2=\$71.9. The cost of one tile is approximately \dfrac{\$71.9}{67}\approx \$1.08.

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Answer:

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Step-by-step explanation:

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