Write as a percent. 0.645
A. 645%
B. 0.0645%
C. 64.5%
D. 0.645%
Answer: C
Mathematics
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Solve the inequality. Graph the solution on a number line and represent the solution in interval notation when possible.x + 5 ? x - 4
A. x ? - 
B. all real numbers
(-?, ?)
C. no solution
D. x ? - 
Mathematics
Multiply. Simplify the answer completely.
? 
A. - 
B. - 
C. - 
D. - 
Mathematics
Simplify by writing with positive exponents. Evaluate if necessary. Assume that all variables represent nonzero real numbers.y4z-3
A. -y7z6
B. 
C. 
D. y3z4
Mathematics
If possible, solve each system by an algebraic method (substitution or addition method). Otherwise, state that the problem has no solution or an infinite number of solutions.
x + 
y = 1
x - 
y = - 
A. (3, 7) B. (-4, 7) C. (6, -3) D. (-3, 6)
Mathematics