Solve the equation by using the quadratic formula. Give only real number solutions.x2 + 4x = 7
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the problem.Find the minimum value of f(x) = ex - 4x on [0, 2].
A. e2 - 8 B. 4 - 4 ln 4 C. 4 - ln 4 D. 1
Mathematics
Use a graphical method to solve the system. Give x- and y-coordinates correct to the nearest hundredth.y = 3-xy = - 
A. x = -1.00, y = 3.00 B. x = 1.00, y = -3.00 C. No solution D. x = 1.00, y = 3.00
Mathematics
Provide an appropriate response.In right triangle ABC, with right angle C, side a = 12, b = 16, and c = 20, find the cos A expressed as a fraction in lowest terms.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Check the subtraction. If the subtraction has not been done correctly, find the correct answer.
A. Incorrect; 6832 B. Incorrect; 5732 C. Incorrect; 7732 D. Correct.
Mathematics