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3 years ago

12

John had a rock that weighed 128 kg. The scale he used to weigh the rock has a percent error of 2%. Which could be measured weig

hts of the rock?

1 answer:

Genrish500 [490]3 years ago

4 0

Answer:

a

Step-by-step explanation:

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Write the equation x² + 6x + y² – 8y = 19 in standard form.

kirza4 [7]

Answer:

Formula used :

<u>x²+2xy+y²</u><u> </u><u>=</u><u> </u><u>(x+y)²</u>
<u>x²-2xy+y²</u><u> </u><u>=</u><u> </u><u>(x-y)²</u>

$→{x}^{2} + 6x + {y}^{2} - 8y = 19 \\ ({x}^{2} + 2.3.x + {3}^{2} ) +({y}^{2} - 2.4.y + {4}^{2} ) = 19 + {3}^{2} + {4}^{2} \\ {(x + 3)}^{2} + {(y - 4)}^{2} = 19 + 9 + 16 \\ \boxed{ {(x + 3)}^{2} + {(y - 4)}^{2} = 44}✓$

<u>3) (x+3)²+(y-4)²=44</u> is the right answer.

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2 years ago

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Artist 52 [7]

Answer:1014

Step-by-step explanation:

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3 years ago

Can you identify the value of each digit ?

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Answer:WHAT VALUE AND WHAT DIGIT

Step-by-step explanation:

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2 years ago

Which equations have equivalent expressions?

Kazeer [188]

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A,D,E

Step-by-step explanation:

i. 2t+3t=6t

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3 years ago

60 sixth graders are going to the social. 240 sixth graders are NOT going to the social. What is the ratio (simplest form) of th

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Answer:

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Step-by-step explanation:

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