Area of a semicircle = 1/2 πr²
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Find Radius:
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1/2πr² = 76.97
r² = 76.97 ÷ 1/2π
r³ = 49
r = √49
r = 7
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Find Diameter:
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Diameter = Radius x 2
Diameter = 7 x 2
Diameter = 14 yards
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Answer: 14 yards
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The answer is 40 because 5a equals 5 times 12 which is 60, and 3b plus c equals 3 times 4 plus 8 which is 20 so 60 minus 20 is 40.
Answer: D. 
Step-by-step explanation: The smaller the coefficient of a fraction by the quadratic function (the x squared value), the more narrow the graph becomes. 1/4 is larger than 1/9 and the other two whole numbers are still larger than 1/9. Even though -1 is less than 1/9, this only makes the graph flip, not make it any more narrow. Fractions are what squeeze graphs, negatives do not make a difference (i.e. -1/4 is the same size of narrowness as 1/4).
APR=7%, monthly interest rate, i=7%/12=0.07/12
Monthly payment, A=100
After 4 years, n=4*12 = 48 months,
the balance F is therefore
F = A((1+i)^n-1)/i
=100((1+0.07/12)^48-1)/(0.07/12)
=5520.92
Answer: the balance after 4 years at APR=7% with monthly payment of $100 is $5520.92 to the nearest cent.
