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3 years ago

Help me asap

1 answer:

8 0

Answer:

(8.5)x = 42- Divide each side by 8.5

get x by itself

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aalyn [17]

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3 years ago

atroni [7]

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ohaa [14]

Answer:

47 if not

Step-by-step explanation:

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lukranit [14]

Y=1\2x.
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3 years ago

Sergio039 [100]

Answer:

Step-by-step explanation:

Noting the following rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ = $\sqrt{ab}$

Given

( $\sqrt{2}$ + $\sqrt{3}$ )( $\sqrt{5}$ - $\sqrt{7}$ )

Each term in the second factor is multiplied by each term in the first factor

= $\sqrt{2}$ ( $\sqrt{5}$ - $\sqrt{7}$ ) + $\sqrt{3}$ ( $\sqrt{5}$ - $\sqrt{7}$ ) ← distribute parenthesis

= $\sqrt{10}$ - $\sqrt{14}$ + $\sqrt{15}$ - $\sqrt{21}$

8 0

3 years ago