Answer:
9
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Answer:
3/5
Step-by-step explanation:
First you would need to add the amount of people who play only basketball, or only baseball. That would be 18. You would then put it in fraction form as 18/30. You can simplify that fraction to 3/5. In decimal form that would be .6 and as a percent 60%.
Answer:

Step-by-step explanation:
5*10 = 50. 50 = 25+25. The sqrt of 25 is 5, so 2 5's make 10.
Answer:
72
Step-by-step explanation:
His Mom got 5 necklaces with 12 shells each, so Cole used 5x12=60 shells on her necklaces. He then made one more for his sister, using another 12 shells. In total, he used 60 shells for his mom's necklaces and 12 for his sister's, equalling (60+12)=72.
Answer:
40
Step-by-step explanation:
6*6/6*-2i/2i*6/2i*-2i