Solve the problem.A window is in the form of a rectangle surmounted by a semicircle. The rectangle is of clear glass, whereas the semicircle is of tinted glass that transmits only one-fifth as much light per unit area as clear glass does. The total perimeter is fixed. Find the proportions of the window that will admit the most light. Neglect the thickness of the frame.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Answer: B
Mathematics
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Subtract.585 - 321
A. 248 B. 264 C. 274 D. 364
Mathematics
Classify the statement as an example of theoretical or experimental probability.The probability of drawing the ace of diamonds from a deck of cards is 
.
A. experimental B. theoretical
Mathematics
List the first n terms of the geometric sequence satisfying the given conditions.a2 = 8, a3 = 16, n = 4
A. 8, 16, 32, 64 B. 4, 8, 16, 32 C. 4, 8, 16, 64 D. 1, 8, 16, 32
Mathematics
For the given equation, evaluate the discriminant. How many real solutions are there?
x2 + 
x + 5 = 0
A. - 
; 0
B. 
; two
C. 0; one
D. - 
; none
Mathematics