Convert to scientific notation.6,600,000
A. 6.6 × 10-5
B. 6.6 × 10-6
C. 6.6 × 106
D. 6.6 × 105
Answer: C
Mathematics
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Solve.A semicircular driveway has a diameter of 90 ft. How long is the driveway?
A. 1350 ft B. 282.6 ft C. 141.3 ft D. 139.3 ft
Mathematics
Solve the equation (x in radians and ? in degrees) for all exact solutions where appropriate. Round approximate answers in radians to four decimal places and approximate answers in degrees to the nearest tenth.cos2 x - 1 = 0
A. {2n?}
B. 
C. {n?}
D. 
Mathematics
Rewrite the following as indicated.0.243 (Write as a percent.)
A. 24.3% B. 0.0243% C. 0.243% D. 243%
Mathematics
Determine the number that should be added to complete the square of the expression. Then factor the expression.x2 + 
x
A. 36; (x +6)2
B. 
; 
2
C. 
; 
2
D. 
; 
2
Mathematics