Answer:
45
Step-by-step explanation:
Multiply 9 · 10 = 90 then divided by 2 = 45
Answer:
1. y=5-2x
2. -y=5-2x
3.
Step-by-step explanation:
1. 2x+y=5
y=5-2x
2. 2x-y=5
-y=5-2x
3. x+2y=5
2y=5-x
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Answer:
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Step-by-step explanation:
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Answer:
Step-by-step explanation:
3x
3x - 4 *5
They are all irregular polygons of quadilaterals