Solve the problem.In a right triangle, the sum of the two acute angles can be represented by the formula a + b = 90°. Find the measure of the missing angle of one of the angles measures 22°.
A. 68°
B. 112°
C. 158°
D. 38°
Answer: A
Mathematics
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Evaluate the absolute value expression.
A. 0 B. ±17 C. -17 D. 17
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Perform the matrix operation.Let B = 
. Find -4B.
A. 
B. 
C. 
D. 
Mathematics
Decide whether the equation is or is not an identity.sin (A + B) sin (A - B) = sin2A - sin2B
A. Not an identity B. Identity
Mathematics
Simplify the sum.(m2 + 8) + (m2 + 6m)
A. 2m2 + 14 B. 2m2 + 6m + 8 C. 2m2 + 14m D. m2 + 6m + 8
Mathematics