Which of the following equations could be solved to determine the length of Qr? OA) QR2 = 202 + 272 - 2(20)(27) · cos 990
B) cos 99
QR
cos R
20
C) QR2 = 202 + 272 - 2(20)(27)
OD) QR2 = 202 + 272 - cos 99°

Describe how fraction strips can you order fractions

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