Solve the problem.In a chemistry class, 9 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
A. 5.5 L
B. 3.5 L
C. 4.5 L
D. 9.0 L
Answer: C
Mathematics
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Adjust the problem so that the coefficient is in the proper form.70.4 × 103
A. 0.704 × 105 B. 7.04 × 102 C. 7.04 × 104 D. 7.04 × 103
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Express the number in scientific notation.8,200,000,000,000
A. 8.2 × 10-9 B. 8.2 × 10-12 C. 8.2 × 1012 D. 8.2 × 109
Mathematics
An observer for a radar station is located at the origin of a coordinate system. For the point given, find the bearing of an airplane located at that point. Express the bearing using both methods.(0, 2)
A. 0°; S 0° W or S 0° E B. 180°; N 0° W or N 0° E C. 0°; N 0° W or N 0° E D. 180°; S 0° W or S 0° E
Mathematics
Multiply.(7y - 8)(49y2 + 56y + 64)
A. 343y3 - 512 B. 343y3 + 512 C. 343y3 + 448y2 - 512 D. 49y3 + 512
Mathematics