Fill in the blank 3(2+7a)=6+

Mathematics

1 answer:

Lilit [14]2 years ago

8 0

Answer:

$3(2+7a)=6+$

$6 + 21a = 6$

$21a + 6 = 6 + 21a$

answer is 21a

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Step2247 [10]

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$\sqrt{80}$

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Step-by-step explanation:

$d = \sqrt{(x_{2}-x_{1} )^{2} +(y_{2}-y_{1} )^{2} } \\d = \sqrt{(4-(-4) )^{2} +(5- 1 )^{2} }\\d = \sqrt{(4+4 )^{2} +4^{2}\\d = \sqrt{8^{2} +4^{2} }\\d=\sqrt{64 +16}\\d=\sqrt{80}$