3 years ago

Multiple choice!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

Rainbow [258]3 years ago

8 0

Answer:

x = 21 i took the test

dolphi86 [110]3 years ago

7 0

By the external angle theorem

5x = (5x - 30) + m < RST

m < RST = 5x - 5x + 30 = 30

also m < STR = m < SRT = 5x - 30

So as there are 180 degrees in a triangle:-

5x - 30 + 5x - 30 + 30 = 180

10x = 180 +30+30-30 = 210

x = 21 answer

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