Simplify the expression by combining like terms.-1.2x3 - 1.5x3 - 0.4x3
A. -4.3x3
B. -15x3
C. Cannot be simplified
D. -3.1x3
Answer: D
Mathematics
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A matrix has an inverse if and only if its determinant does not equal 0. Determine whether the given matrix has an inverse.
A. Yes B. No
Mathematics
Perform the indicated operation. Give answers in rectangular form expressing real and imaginary parts to four decimal places.[8(cos 30° + i sin 30°)][3(cos 90° + i sin 90°)]
A. -1.0000 + 1.7321i B. -12.000 + 20.7846i C. -0.5000 + 0.8660i D. -5.5000 + 9.5263i
Mathematics
Perform the indicated operation. Simplify if possible.
- 
A. - 
B. 
C. - 
D. 
Mathematics
Solve the equation.6y - 16 = 5y - 1
A. 15 B. 14 C. -3 D. 16
Mathematics