Which equation could be used to find the value of x? Triangle DEF where angle E is a right angle. DE measures x. DF measures 55. Angle F measures 49 degrees. cos 49° = x over 55 cos 49° = 55 over x sin 49° = x over 55 sin 49° = 55 over x

answer: he is 272195

step-by-step explanation: all you have to do is multiple 3535 and 77 and it equals 272195

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answer: d.) the total number of protons and neutrons is 15

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