Find the sum of the series, if possible.8 + 2 + 
+ 
+ . . .
A. 
B. 
C. 
D. 
Answer: A
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Provide an appropriate response.(27 × 14) × 11 = 415827(14 × 11) = 4158This is an example of the 
.
A. commutative property of addition B. associative property of multiplication C. commutative property of multiplication D. associative property of addition
Solve the problem.For a hyperbolic mirror the two foci are 38 cm apart. The distance of the vertex from one focus is 7 cm and from the other focus is 31 cm. Position a coordinate system with the origin at the center of the hyperbola and with the foci on the y-axis. Find the equation of the hyperbola.
A. 
- 
= 5
B. 
- 
= 5
C. 
- 
= 1
D. 
- 
= 1
Prove the identity.
= 
What will be an ideal response?
Use a proportion to solve the problem.The ratio of the lengths of strings that play the notes F and G is 9 to 8. If a string 80 centimeters long plays a G, what is the length of the string that plays an F?
A. 88 cm B. 89 cm C. 90 cm D. 71.1 cm