Find the LCM of the pair of numbers.50 and 70
A. 120
B. 70
C. 350
D. 3500
Answer: C
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 = 
7
A. y = u7; u = 4x2 - 
- x; 
= 7
6
B. y = 4u2 - 
- u; u = x7; 
= 8x14 - 
- x7
C. y = u7; u = 4x2 - 
- x; 
= 7
6
D. y = u7; u = 4x2 - 
- x; 
= 7
6
Mathematics
Use the quadratic formula to solve the quadratic equation.4x2 + 12x = - 4
A. 
B. 
C. 
D. 
Mathematics
Solve the quadratic equation and simplify your answer. Use i notation for any complex numbers.2x2 - 5x = 7
A. x = 
, x = -1
B. x = 
, x = 1
C. x = 
, x = 1
D. x = 
, x = -1
Mathematics
Find the vertex of the parabola, and determine whether the parabola opens upward, downward, to the left, or to the right.x = -(y + 4)2 + 8
A. (16, -8), right B. (-4, 8), left C. (8, -4), left D. (8, -4), right
Mathematics