Answer:
(B) x=\sqrt{30}
Step-by-step explanation:
Answer:
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Step-by-step explanation:
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Answer:

Step-by-step explanation:

It would be
, or, in simplest form,
.
You get this by adding all the marbles to find the total number of marbles. <em>10+7+12+9</em>, which equals <em>38</em>.
You have <u>10 red marbles out of 38 total</u>, so that is represented by
!