Question

Bantuin pleasee nomor yg bisa he he makasih

Answer 1

8. 180 = (3y-10)+y+y
180 = 5y -10
190 = 5y
y = 38 (A)

9. A+B+C = 180
2x + x+17 + 28 = 180
3x + 45 = 180
3x = 135
x = 45
krn sudut A 2.x yaitu 90, maka segitignya siku2

10.PR = RQ
maka, 2PR = PR + RQ
PR + RQ = 3/2.2 = 3 PQ
K = 28.
28 = 3PQ + PQ
28 = 4PQ
PQ=7cm

11. p:q:r = 2:3:4
K = 45
2x + 3x+ 4x = 45
9x = 45
x = 5
p = 10
q = 15
r = 20
jadi PR = 20