Answer:
A) 27
Step-by-step explanation:
= 81
<em>x = 2 </em>
<em />
<em>3(</em>) = 3(9) = 27
There are 30 boys in the competition. You can find it by first dividing 42 by 7 which is 6, then you multiply 6 by 5 to get 30.
Answer:
B
Step-by-step explanation:
radical 8 = radical 4 * radical 2 = 2*radical 2
A is the answer you seek
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Well i think is better expressed if x^2=9.then x=3, that will be better expressed. Now the converse if clearly false, since if x^2<span>=9</span> it is possible that <span>x=−3. I hope this is useful for you</span>