Solve the problem using a system of equations.Anne and Nancy use a metal alloy that is 18.2% copper to make jewelry. How many ounces of a 17% alloy must be mixed with a 19% alloy to form 110 ounces of the desired alloy?
A. 46 oz
B. 44 oz
C. 71 oz
D. 66 oz
Answer: B
Mathematics
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Solve the problem.Suppose you would like to cross a 219-foot wide river in a boat. Assume that the boat can travel 38 mph relative to the water and that the current is flowing west at the rate of 7 mph. What bearing should be chosen so that the boat will land at a point exactly across from its starting point? Give your answer to the nearest tenth of a degree.
A. 10.6° B. 7.1° C. 79.4° D. 8.5°
Mathematics
Find the slope.Find the slope of a line perpendicular to the line y = - 4x.
A. 
B. 0
C. undefined
D. - 4
Mathematics
Simplify the expression. If any variables exist, assume that they are positive.-5
- 7
A. -16
B. -12
C. 26
D. -26
Mathematics
Expand the logarithmic expression. In(XY²Z³)
What will be an ideal response?
Mathematics