Surface area is always measured in squared units for #5; the formula for circumference is C = 2* pi*r for #6; #7...that's a diameter; the symbol for pi is this:
Answer:
4 feet or 4/15
Step-by-step explanation:
1. So first you have to multiply the top and bottom number of each fraction by the denominator of the opposite fraction to have the same denominator:
1/3 X 5/5 = 5/15
3/5 X 3/3 = 9/15
2. Then you compare the two fractions and subtract the smaller fraction from the bigger:
9/15 - 5/15 = 4/15
So Jimmy dived 4 feet deeper the second time
I am assuming y2y is 2y².
4(3) - 2(3)² + 3 = 12 - 18 + 3 = -3
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