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BlackZzzverrR [31]
3 years ago
12

PLSSS HELP IF YOU TURLY KNOW THISS

Mathematics
1 answer:
koban [17]3 years ago
7 0

Answer:

x=4

Step-by-step explanation:

multiply both sides by 5: 2x-8= -5x+20

move the -5x over: 7x-8= 20

move the -8 over: 7x= 28

divide both sides by seven: x= 4

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Answer number 1 please.​
Minchanka [31]

\sf {a}^{2}  =  {13}^{2}  -  {5}^{2}

Formula :

Base²= Hypotenuse² - Perpendicular ²

\\  \\

\hookrightarrow\sf {a}^{2}  =  {13}^{2}  -  {5}^{2}

\\  \\

\hookrightarrow\sf {a}^{2}  =169 - 25

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\hookrightarrow\sf {a}^{2}  =144

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\hookrightarrow\sf {a} = \sqrt{144}

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\hookrightarrow\sf {a} = \sqrt{12 \times 12}

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\hookrightarrow\sf {a} = 12

Remember the a² in formula has nothing to do with the a we have to find. :)

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