Answer:
z = (5sy^4 - N) / 7s
Step-by-step explanation:
N = 5sy^4 - 7sz
Add 7sz to both sides:
N + 7sz = 5sy^4
7sz = 5sy^4 - N
Divide both sides by 7s:
z = (5sy^4 - N) / 7s.
There are 5 + 7 = 12 triangles or hexagons. So the probability is 12/15 = 4/5. As a percent, it would be 80%.
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Hope this helps!
==jding713==
Answer:
9: x = 3
y = 1
10: x = -2
y = 4
Hope it helps and have a great day! =D
~sunshine~
