Suppose that Sahil knows that 45 people with ages of 18 to 29 voted. Without using a calculator, he quickly says then 135 people
with ages of 30 to 49 voted. Is he correct? How might Sahil have come up with his answer so quickly?
The pic at bottom
The pic at bottom
1 answer:
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ANSWER
a=-2, b=3
EXPLANATION
The given equation is
Recall that:
We simplify the left hand side to get:
For this equation to be true, we must have:
-6a=12 and 2+b=5
This implies that,
a=-2 and b=3