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harkovskaia [24]
4 years ago
8

Barbara worked 30 hours last week. She

Mathematics
1 answer:
schepotkina [342]4 years ago
4 0

Answer:approximately  a little more than 32 hours

Step-by-step explanation:

422/30  =  455/x

422x  =  30*455

422x = 13,650

x=32.345971

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aivan3 [116]
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<span>cos2A - cos4A = -2 sin(6A/2).sin(-2A/2) = +2 sin(3A).sinA
 
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I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
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