Write the linear system as a matrix equation in the form AX = B, where A is the coefficient matrix and B is the constant matrix. 3x + 6y = 75 9x - 2y = 65
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Answer: C
Mathematics
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Translate to a proportion and solve. Round to the nearest hundredth, if necessary.What number is 90% of 350?
A. 3,150 B. 31.5 C. 31,500 D. 315
Mathematics
Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.log2
A. 4 - log2x
B. - 2log2x
C. 2 - log2x
D. 
Mathematics
Factor completely.144k2 - 169m2
A. (12k + 13m)(12k - 13m) B. (12k - 13m)2 C. (144k + m)(k - 169m) D. (12k + 13m)2
Mathematics
Refer to triangle ABC. If 
inches, 
inches, and 
, find c.
? Apply the rules regarding the use of significant digits after all computations are complete. ? A. 120 inches B. 140 inches C. 96 inches D. 110 inches E. 130 inches
Mathematics