Express the number in decimal notation.8.1 × 105
A. 81,000
B. 8,100,000
C. 405
D. 810,000
Answer: D
Mathematics
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Find the indicated probability. Round as indicated.Find the probability of at least 2 girls in 7 births. Assume that male and female births are equally likely and that the births are independent events. Estimate the probability to three decimal places if necessary.
A. 0.773 B. 0.938 C. 0.063 D. 0.164
Mathematics
Find v ? u.v = 4i - 4j and u = -8
i + 5j
A. -20
i - 32j
B. -20 - 32
C. (4 - 8
)i + 1j
D. -20
+ 32
Mathematics
What property of whole-number multiplication justifies the equality?0 ? 38 = 0
A. Closure property B. Commutative property C. Multiplicative-identity property D. Multiplication-by-zero property
Mathematics
Multiply. Write the answer as a mixed number as needed.1
? 
A. 4
B. 
C. 
D. 1
Mathematics