Helllp. find the value of x a.75 b.70 c.60 d.80

75°

Step-by-step explanation:

The diagram above shows an isosceles triangle because it has 2 equal sides, therefore the two base angles must also be equal.

Hence;

x° + x° + 30° = 180 ( sum of the interior angle of a triangle)

2x° + 30° = 180°

collect like terms

2x° = 180° - 30°

2x° = 150°

Divide bothside by 2

2x°/2 = 150°/2

x° = 75°

1 x=22.52

2: 65/39=604+39x

65x-39x=604

26x=604

x=604/26

×=23.23

the answer is 13 cm