Translate the question into an equation. Do not solve.What percent of 63 is 31?
A. 63% ? x = 31
B. 63% = 31 ? x
C. x = 63 ? 31
D. x ? 63 = 31
Answer: D
Mathematics
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Solve the problem.You find a 2-pound nugget that is 50% gold. What is its purity in karats?
A. 50 karats B. 4.8 karats C. 24 karats D. 12 karats
Mathematics
Solve the equation.
- 
= 4
A. {-96} B. {96} C. {92} D. {-92}
Mathematics
Express the relationship between a small change in x and the corresponding change in y in the form 
.y = sec-1
A. dy = -9x8sin
dx
B. dy = ex9x8sin
dx
C. dy = 9ex9x8sin
dx
D. dy = -9ex9x8sin
dx
Mathematics
Write the integral that gives the surface area generated when the curve is revolved about the x-axis. Do not simplify.y = tanx on 
A. 2?
dx
B. 
dx
C. 
dx
D. 2?
dx
Mathematics