A triangular trellis has angles R, S, and T that measure 73°, 73°, and 34°, respectively. If the length of ST = 4y + 6 and the length of TR = 7y - 21, what is the value of y?

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Question

A triangular trellis has angles R, S, and T that measure 73°, 73°, and 34°, respectively. If the length of ST = 4y + 6 and the length of TR = 7y - 21, what is the value of y?

15
9
11
5

jim_thompson5910 · Answer

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jim_thompson5910 · Answer

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jim_thompson5910 · Answer

the reason why ST = TR is because the base angles (R and S) are congruent. We have an isosceles triangle

campayne · Answer

all of this makes sense, except for how to solve for the 4y + 6 and 7y - 21

triciaal · Answer

go back to basics
you have an equation
leave the unknown on one side and the constant on the other.  combine like terms whatever you do to one side of the equation also do to the other to maintain the balance.   solve for the unknown

triciaal · Answer

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