Find the real solutions, if any, of the equation. Use the quadratic formula.x2 - 4x - 7 = 0
A. {2 + 
, 2 - 
}
B. {2 + 
, 2 - 
}
C. {-2 + 
, -2 - 
}
D. {4 + 
, 4 - 
}
Answer: B
Mathematics
You might also like to view...
Perform the indicated operation.Let A = 
and B = 
. Find A + B.
A. 
B. 
C. 
D. 
Mathematics
Write an equation for the parabola.vertex (4, 8), focus (4, 10)
A. 2(y - 8) = (x - 4)2 B. (y - 8)2 = 8(x - 4) C. y - 8 = 8(x - 4)2 D. 8(y - 8) = (x - 4)2
Mathematics
Factor completely, or state that the polynomial is prime.48y4 - 147y2
A. 3y2(4y + 7)(4y - 7) B. 3(4y2 + 7)(4y2 - 7) C. 3y2(4y - 7)2 D. prime
Mathematics
Solve the problem.The function P, given by P(d) = 
d + 1, gives the pressure, in atmospheres (atm), at a depth d, in feet, under the sea. Find the pressure at 200 feet. Round your answer to the nearest whole number.
A. 200 atm B. 7 atm C. 201 atm D. 8 atm
Mathematics