Answer:
<P 40, <Q 25, <PRQ 115, <PRS 65
Step-by-step explanation:
exteririor angle = sum of remote angles
(3x + 4) + (2x + 1) = (6x - 7)
3x + 2x + 4 + 1 = 6x - 7
5x + 5 = 6x - 7
<u> +7 +7</u>
5x + 12 = 6x
<u>-5x -5x</u>
12 = x
x = 12
find angle mesures:
3(12) + 4
36 + 4
40
2(12) + 1
24 + 1
25
6(12) - 7
72 - 7
65
forms linear pair
65 + m<PRQ = 180
-65 -65
m<PRQ = 115
Answer:
3.207 x 
Step-by-step explanation:
Answer:
A)10.25 cm ; B)5 square cm
Step-by-step explanation:
A)
Formula:
p=(a+b+c) [p= perimeter ; a,b , and c are the side lengths.]
∴The perimeter of the triangle =(4+2.75+3.5) cm
=10.25 cm
B)
Formula:
A = 1/2 . b .h [A=area ; b= base ; h= height]
∴The area of the triangle = (1/2 . 4 . 2.5) square cm [b=4 ; h=2.5]
=5 square cm
Looks complicated, sorry wish I could help
