Solve the equation.a - 7 = 6
A. -13
B. -1
C. 13
D. 1
Answer: C
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Use the PERT diagram to answer the question.Find a critical path for task I.
A. Begin, ADGFI B. Begin, ADGI C. Begin, AGFI D. Begin, BCHI, End
Solve the equation on the interval 0 ? ? < 2?. sin ? + 
cos ? = -1
A. 
B. 
C. 
D. 
Three pieces of steel angle are welded together. The pieces were 122 in., 61 in., and 141 in., respectively. What is the total length in feet?
A. 9 B. 32 C. 25 D. 7 E. 27
Use the formula src="https://sciemce.com/media/3/ppg__cognero__Section_6.9_Reciprocal_Formulas_Using_a_Calculator___media__beeac824-7765-49d4-bf85-e4b06342f55b.GIF" style="vertical-align:-5px;" varid="variable_id_field" variablename="impvar_49158abd2cb048ee894188346" class="wirisformula" />. Find 
.Given 
, 
and 
.
A. 
B. 
C. 
D. 
E. 