Solve the equation.3(5x - 2) - 12 = 13x - 4
A. 7
B. -7
C. 28
D. 14
Answer: A
Mathematics
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Provide an appropriate response.Find all complex cube roots of z = -8i. Write each root in rectangular form.
A. -2i, 
+ i, 
+ i
B. 2i, - 
- i, 
- i
C. -2i, 
- i, 
- i
D. 2i, - 
+ i, - 
+ i
Mathematics
Write the augmented matrix for the system of equations.x - 5y + z = 11 y + 7z = 19 z = 15
A. 
B. 
C. 
D. 
Mathematics
Find the expected value.A new light bulb has been found to have a 0.02 probability of being defective. A shop owner receives 500 bulbs of this kind. How many of these bulbs are expected to be defective?
A. 20 B. 100 C. 10 D. 500
Mathematics
Find the commission earned or the rate of commission. Round money answers to the nearest cent if necessary.Sales: $570 Commission: $31.35
A. 0.55% B. 6.5% C. 7.5% D. 5.5%
Mathematics