Find the area of the circle. Use 3.14 or 
for ? as indicated.Use 
for ?.
A. 8
ft2
B. 5
ft2
C. 17
ft2
D. 4
ft2
Answer: B
Mathematics
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Solve the problem.The loudness of a sound can be approximated by the formula d = 10 log10 
, where d is the number of decibels. The higher the value of d, the louder the sound. Find the number of decibels when 
and 
A. 12 decibels B. 20 decibels C. 2 decibels D. 100 decibels
Mathematics
Express the number in decimal notation.7 × 10-7
A. 0.0000007 B. -700,000 C. 0.00000007 D. 0.000007
Mathematics
Perform the indicated operation. Simplify the result.
- 
A. 
B. 
C. 
D. 
Mathematics
Classify the equation as a contradiction, an identity, or a conditional equation. 6(x + 5) - 8(x + 5) = -2x + 70
A. Contradiction B. Conditional C. Identity
Mathematics