Perform the indicated operation. Write the answer in scientific notation.(8.64 × 10-4)(8.43 × 10-4)
A. 7.28 × 10-7
B. 7.28 × 1016
C. 7.3 × 10-7
D. 7.3 × 1016
Answer: A
Mathematics
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Perform the division. Write the answer with positive exponents.
A. 15x10 - 3x2 + 8 + 
+ 
B. 5x3 - 9x9 + 24x7 + 21x5 + 2x4
C. 5x3 - 3x2 + 8 + 
+ 
D. 5x3 - 3x2 + 8
Mathematics
Write the fraction as a decimal. If necessary, use repeating decimal notation.- 
A. -0.
B. -0.
C. -0.4
D. -0.45
Mathematics
Solve the inequality: 
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve.Martin is installing an invisible fence in his back yard which measures 100 feet by 69 feet by 88 feet by 98 feet. How many feet of wiring is needed to enclose his yard?
A. 375 feet B. 355 feet C. 345 feet D. 365 feet
Mathematics