You know that the sum of a and b is 24, because the average is the sum of the numbers divided by the amount of numbers added together, and 12*2 is 24. Add 3 to 24 so you have 27, and then divide that by 3 because there are now 3 numbers in the set. The average of a, b, and c is 9.
Badly because, Adverbs often end in -ly
B. Bone denesity because as we age our bones become brittle and can break easily hence why older people often break their wrist or hips when falling. And being fit can help.
Answer:
A, Join in the Fun Run to help a good cause, make friends, and get healthy.
Explanation:
<em>B causes people to have the "if only 75% need to join, why does that mean me?" mindset.</em>
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<em>C causes people to have the "why does that matter it's not me?" mindset.</em>
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<em>D is not a compelling argument to make to a student.</em>
