Find all values of x in the interval [0°, 360°) that satisfy the equation. Round approximate answers to the nearest tenth of a degree.3 sin2x - sin x - 4 = 0
A. {90°}
B. {180°}
C. {270°}
D. {0°}
Answer: C
Mathematics
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Find the reciprocal of the number or algebraic fraction.
A. 
B. 
C. 
D. 
Mathematics
Solve using the quadratic formula. Use a calculator to approximate the solution to three decimal places.
x2 + 
x - 
= 0
A. 0.75 B. -1.25, 0.75 C. -1 D. -0.781, 1.281
Mathematics
Solve the problem.Evaluate 
by expanding across the third row. Show all your work.A = 
What will be an ideal response?
Mathematics
If 
and 
, find:
and 
A. 
=94 and 
=12
B. 
=94 and 
=21
C. 
=100 and 
=12
D. 
=100 and 
=21
E. 
=88 and 
=3
Mathematics