Find another representation, (r, ?), for the point under the given conditions.
, r > 0 and 2? < ? < 4?
A. 
B. 
C. 
D. 
Answer: B
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Provide an appropriate response.The standard normal probability density function is defined by f(x) = 
e- x2/2. (a) Use the fact that 
dx = 1 to show that 
dx =
.(b) Use the result in part (a) to show that the standard normal probability density function has variance 1.
What will be an ideal response?
Rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero.
A. 5xy6
B. 
C. 5xy1/6
D. 
Solve the problem.The revenue from the sale of a product is given by R = 1420x - 17x2 - x3. If the sale of 10 units gives a total revenue of $11,500, use synthetic division to find another number of units that will give $11,500 in revenue.
A. 28 units B. 23 units C. 50 units D. 13 units
Identify the equation as a parabola, circle, ellipse, or hyperbola.x2 - y2 = 16
A. Ellipse B. Hyperbola C. Parabola D. Circle