Mathematics: In triangle abc, angle a = (4x+5) and angle b = (5x-1) what is angle c? 29 180 8 122

A) × 3-----------7 × 3= -2118 × 3= 54A IS WRONG!...

In triangle abc, angle a = (4x+5) and angle b = (5x-1)

Ответ:

conyabrew82

13.03.2022

It is an isosceles triangle, therefore

$m\angle A=m\angle B$

$4x+5=5x-1\ \ \ |-5\\4x=5x-6\ \ \ |-5x\\-x=-6\to x=6$

$m\angle A=m\angle B=4\cdot6+5=24+5=29^o$

We know:

$m\angle A+m\angle B+m\angle C=180^o$

therefore

$29^o+29^o+m\angle C=180^o\\\\58^o+m\angle C=180^o\ \ \ |-58^o\\\\m\angle C=122^o$

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Ответ:

epicsushiman1

30.04.2022

Mathematics

$\frac{-7}{18}$ × 3

----------

-7 × 3= -21

18 × 3= 54

A IS WRONG!

0,0(0 оценок)

In triangle abc, angle a = (4x+5) and angle b = (5x-1) what is angle c? 29 180 8 122

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