Graph the expression on each side of the equals symbol to determine whether the equation might be an identity.
= tan ?
A. Not an Identity
B. Identity
Answer: B
Mathematics
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Solve the system using matrices. If there is no solution or if there are infinitely many solutions and a system's equations are dependent, so state.
A. infinitely many solutions; dependent equations B. {(3, -2, 0)} C. no solution or ? D. {(0, 0, -2)}
Mathematics
Solve using the elimination method.- x + 4y = -4-3x - 4y = 20
A. (-3, -3) B. (-4, -2) C. No solution D. (2, -4)
Mathematics
Approximate the expression to the nearest thousandth.2.9(42) - 2(6) + 6
A. -32.6 B. 46.4 C. 34.4 D. 40.4
Mathematics
Refer to the figure in which O is the center of the circle, 
is a tangent, m?PCE = 20° m?Boc = 80°, PE = 10 ft, PD = 12 ft, ER= 4 ft, and BR= 5 ft.
Find m?DPE
Mathematics