Solve the system using the addition method. If the system is inconsistent and has no solution, state this. If the system is dependent, write the form of the solution for any real number x. x + 8y = 51-4x + 7y = 69
A. ?
B. (-5, 7)
C. (-6, 8)
D. (5, 8)
Answer: B
Mathematics
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Solve the equation by using the quadratic formula. Give only real number solutions.3x2 + 12x = - 2
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.The current population of a threatened animal species is 1 million, but it is declining with a half-life of 
How many animals will be left in 80 years?
A. 22,965 animals B. 46 animals C. 45,929 animals D. 230 animals
Mathematics
Solve the following equation for x.
x = -11
A. x = -13 B. x = 5 C. x = 22 D. x = 12
Mathematics
Write the expression in the standard form a + bi.(
+ i)5
A. 16
- 16i
B. -16
+ 16i
C. 9
+ 5i
D. 16 - 16
i
Mathematics