When 0.5(20x – 50y + 36) – 0.25(–100x + 40y – 12) is simplified, what is the resulting expression? 10 x minus 25 y + 18 minus 25
2 answers:
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9514 1404 393
Answer:
sign(f(3)) ≠ sign(f(4))
Step-by-step explanation:
The intermediate value theorem tells you that a sign change between f(a) and f(b) means there is a root in the interval [a, b].
Here, we have f(3) ≈ +2.9 and f(4) ≈ -17.6, so there is a root in [3, 4].
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The root is approximately 3.27560108885.
