Use a calculator to find the approximate value. Express your answer in degrees rounded to two decimal places.cos-1 (0.45)
A. 53.49°
B. 24.23°
C. 26.74°
D. 63.26°
Answer: D
Mathematics
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Solve the quadratic inequality by any method. Write your answer in interval notation.x2 - 3x - 10 < 0
A. (5, ?) B. (-?, -5) C. (-2, 5) D. (-?, -2)
Mathematics
Solve the quadratic equation using the quadratic formula.10 = 4x - x2
A. {-2 - i
, -2 + i
}
B. {2 - i
, 2 + i
}
C. {2 - i
, 2 + i
}
D. {-2 - i
, 2 + i
}
Mathematics
Use the multiplication principle to solve the equation.
= 18
A. -126 B. -108 C. -119 D. -25
Mathematics
Solve.2k2 + 25 = -15k
A. -5, -10
B. - 
, -5
C. 5, 
D. 5, - 
Mathematics