Write the system of equations associated with the augmented matrix. Do not solve.
A. 
B. 
C. 
Answer: B
Mathematics
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Solve the equation.
+ 4 = 
- 2
A. 
B. 
C. 
D. 
Mathematics
Write the expression in the standard form a + bi.(4 + 9i)(9 + 7i)
A. 63i2 + 109i + 36 B. 99 + 53i C. -27 - 109i D. -27 + 109i
Mathematics
Solve the problem.Helen Weller invested $12,000 in an account that pays 1.25% simple interest. How much additional money must be invested in an account that pays 3.5% simple interest so that the average return on the two investments amounts to 2%?
A. $6000 B. $8000 C. $9000 D. $12,000
Mathematics
Fill in the blank with one of the words or phrases listed below.
A fraction is in 
when the numerator and the denominator have no factors in common other than 1.
A. least common denominator B. cross products C. simplest form D. prime factorization
Mathematics