Add.- 
+ (- 
)
A. - 
B. - 
C. -8
D. - 
Answer: D
Mathematics
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Provide an appropriate response.If the expression 343x3 + 27y3 is written in the form a3 + b3, then 
and 
A. a = 3; b = 7 B. a = 3x; b = 7y C. a = 7x; b = 3y D. a = 7; b = 3
Mathematics
Solve the problem.The radiator in a certain make of car needs to contain 
of 40% antifreeze. The radiator now contains 
of 20% antifreeze. How many liters of this solution must be drained and replaced with 100% antifreeze to get the desired strength?
A. 28 L B. 17.5 L C. 23.3 L D. 35 L
Mathematics
Find the conjugate of the number.
A. 
B. 3i
C. -
D. i
Mathematics
Find the equation of the tangent line to the curve when x has the given value.f(x) = -5
; x = 16
A. y = - 
x - 15
B. y = - 
x - 10
C. y = 
x - 10
D. y = - 
x + 10
Mathematics