Write out the sum.
A. 7 + 72 + 73 + ... + 7n
B. 72 + 73 + 74 + ... + 7n+1
C. 72 + 73 + 74 + ... + 7n
D. 7 + 72 + 73 + ... + 7n+1
Answer: B
Mathematics
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A. x + 5 B. (x + 5)(x2 - 25) C. x2 - 25 D. (x + 5)(x - 5)2
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Assume that the cities lie on the same north-south line and that the radius of the earth is 6400 km. Find the distance between City A, 34° N and City B, 37° N. (Round to the nearest kilometer.)
A. 406 km B. 372 km C. 335 km D. 301 km
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Write the number in standard form.5.247 × 10-6
A. 0.000005247 B. 0.00005247 C. -5,247,000 D. 0.0000005247
Mathematics