Answer:
4x+88=180
First angle is 54°
Second angle is 23°
Third angle is 103°
Step-by-step explanation:
Let x be the second angle. First angle is 31+x. Third angle is 2*(31+x)-5 = 62+2x-5 = 2x+57
All angles in a triangle add upto 180°
31+x+x+2x+57 = 180
4x+88=180
Subtract 88 from both sides,
4x = 92
Divide by 4,
x = 23°
31+x = 54°
2x+57 = 2*23 + 57 = 46+57 = 103°
Answer:
here a1=-14
d=a2-a1
d=-25-(-14)
d=-25+14
d=-11
as
an=a1+(n-1)d
a60=-14+(60-1)(-11)
a60=-14-59(11)
a60=-14-649
a60=-663
Step-by-step explanation:
Answer:
coin 1
Step-by-step explanation: i think this is it
Answer. : C. Quadrilateral PQRS is a rectangle.
Step-by-step explanation: Plato
