Write the phrase as a variable expression. Use x to represent "a number."Twice a number, decreased by 8
A. 2x - 8
B. 2(x - 8)
C. 2 + x - 8
D. x - 16
Answer: A
Mathematics
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Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = tan
A. y = tan u; u = ? - 
; 
= 
sec2
B. y = tan u; u = ? - 
; 
= sec2
C. y = tan u; u = ? - 
; 
= sec2
D. y = tan u; u = ? - 
; 
= 
sec
tan
Mathematics
Write the expression in the standard form a + bi.(6 + 7i) - (-8 + i)
A. 14 + 6i B. -2 + 8i C. 14 - 6i D. -14 - 6i
Mathematics
Solve the system by graphing.
A. (5, 1) B. (6, 1) C. (6, 0) D. Inconsistent
Mathematics
Solve.
= 
- 
A. 0 B. 0, -3 C. 0, 3 D. 0, -3, 3
Mathematics