Answer/Step-by-step explanation:
Factor this. GCF=2
2(2cos2x+cos x-1)=0
2(2cos x -1)(cos x+1)=0 Set each factor equal to zero and solve
2cos x -1=0 Add 1 to both sides
2cos x =1 Divide by 2
cos x =1/2
x=π/3
x=5π/3
cos x+1=0 Subtract 1 from both sides
cos x=-1
<u><em>x = π</em></u>
<u><em></em></u>
Answer:
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Step-by-step explanation:
2.b..........................
70,000 * (1+.022/12)^(12*20)
70,000 * (1.552081849 = 108,645.73
108,645.73 - 70,000 = $38,645.73 in interest in 20 years
Answer:
Step-by-step explanation:
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Good evening ,
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Here we used A and B properties
Look at the photo below for the explanation,
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