Answer:
they both deal with altitudes of a triangle
Step-by-step explanation:
Isolate y: 2x-15(20+x)=-1
isolate x: 20-23 = -3
substitute: x = -23
answer: (-23, -3)
K + a + h = 50
a = 2h
k = h - 10
(h - 10) + 2h + h = 50
4h - 10 = 50
4h = 50 + 10
4h = 60
h = 60/4
h = 15 <=== Henry sent 15
a = 2h
a = 2(15)
a = 30 <=== Aldo sent 30
k = h - 10
k = 15 - 10
k = 5 <=== Keiko sent 5