Use scientific notation to solve the problem.Suppose that we could somehow capture all the energy released by the Sun in just one second. For how many years could U.S. energy needs be met by this energy? Assume that the annual energy generation of the Sun is 
joules and that U.S. annual energy consumption is 1 × 1020 joules. Give your answer in scientific notation.
A. 3.17 × 101.3 years
B. 7.61 × 106 years
C. 1 × 1014 years
D. 3.17 × 106 years
Answer: D
Mathematics
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Solve the system of equations using Cramer's rule. x - 4y - 2z = -29 -3x + y + z = -6-2x + 4y - z = 21
A. (8, 1, 5) B. (5, 1, 8) C. (5, 8, 1) D. (-5, 8, 10)
Mathematics
Provide an appropriate response.Add: 627 + 89.
A. 1517 B. 717 C. 706 D. 716
Mathematics
Find the requested number.A number increased by 5 is -3. What is the number?
A. 8 B. -8 C. 7 D. -7
Mathematics
Find u×v.
?
?
A. 
B. -23
C. -17
D. 
E. 
Mathematics