Solve the problem using matrices.John has a jarful of quarters and nickels. There are 99 coins in the jar. The value of the coins is $16.35. How many of each type of coin?
A. 94 quarters and 5 nickels
B. 42 quarters and 57 nickels
C. 62 quarters and 37 nickels
D. 57 quarters and 42 nickels
Answer: D
Mathematics
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A. 1
B. 
C. 0
D. 
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Evaluate the expression.
2
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.To factor the polynomial ax2 + bx + c with FOIL, you first find possible factors for 
and for 
.
A. ax2; b B. b; c C. ax2; c
Mathematics
Write the equation in terms of a rotated x'y'-system using ?, the angle of rotation. Write the equation involving x' and y' in standard form.x2 + 2xy + y2 - 8x + 8y = 0; ? = 45°
A. 3x'2 - 4
x'y' + y'2 = 0
B. 2x'2 - 
x'y' + 2y'2 = 0
C. x'2 = -4
y'2
D. x'2 = -4
y'
Mathematics