This is an A. <span>observational study. They are observing the use of cell phones differs between people with or without cancer.
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Answer:
110 degrees
Step-by-step explanation:
Parallels lines, when intersected by a straight line, form congruent angles. Therefore 110 is equal to angle 6
Answer:4 quarters and 4 nickels
Step-by-step explanation:
Yes. It is equivalent to 3. Combine like terms