Factor completely.20x2 - 140x + 245
A. 5(2x - 7)2
B. 5(4x2 - 28x + 49)
C. (10x - 35)(2x - 7)
D. 5(2x + 7)(2x - 7)
Answer: A
Mathematics
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Solve the problem.A charged particle of mass m and charge q moving in an electric field E has an acceleration a given by 
where q and E are constants. Find 
.
A. 
= - 
B. 
= - 
C. 
= 
D. 
= qEm
Mathematics
Completely factor the polynomial or state that the polynomial is prime.x4 - 2x2 - 35
A. (x2 - 7)(x2 + 5) B. prime C. (x2 + 7)(x2 + 1) D. (x2 + 7)(x2 + 5)
Mathematics
Evaluate the integral.
A. 24 B. 0 C. 16 D. 23.2
Mathematics
Solve using the substitution method. Use a graphing calculator to check your answer. 2x + 2y = 97x + 7y = 14
A. (6, 7) B. (1, 1) C. No solution D. Infinitely many solutions
Mathematics