4 years ago

Find x 5x-7+8x-55 13 POINTS Show work please

Mathematics

2 answers:

Inessa [10]4 years ago

7 0

Answer: =13x-62

* Hopefully the work below helps:) Mark me the brainliest:)!!

∞ 234483279c20∞

Law Incorporation [45]4 years ago

3 0

Combine like terms. The 5x is grouped to the 8x and the -7 isgrouped with the -55.

This means 5x + 8x = 13x and -7 - 55 = -62

The new expression is 13x - 62. We can't find the exact value of x because the expression wasn't set equal to anything.

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saveliy_v [14]

Answer:

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Step-by-step explanation:

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PLZ HELP SCALE FACTOR TRIANGLE A. 10.5 cm B. 31.5 cm C. 63 cm D. 189 cm

Anarel [89]

If two similar triangles have sides in the ratio a : b, then their areas are in the ratio a² : b².

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$54:18=\dfrac{54}{18}=3:1$

Area of the smaler triangle = x

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Therefore we have the equation:

$567:x=3^2:1^2\\\\\dfrac{567}{x}=\dfrac{9}{1}\qquad|\text{cross multiply}\\\\9x=567\qquad|\text{divide both sides by 9}\\\\x=63$

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