M and N are the midpoints of sides RS and RTof △RST, respectively. Given: RM = RN = 4x + 1
ST = 9x − 5
m∠R = 60°
Find: x, RM, and ST

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

not sure but it may be b, as i said i'm not sure.

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