1. A random sample of 64 customers at a drive-through bank window is observed, and it is found that the teller spends an average

of 2.8 minutes with each customer, with a standard deviation of 1.2 minutes. Is there sufficient evidence to conclude that the teller spends less than 3 minutes with each customer

Mathematics

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To resolve this, we multiply the 30-day timeframe by 7, resulting in a total of 210 days.

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Find the coefficient of x2 in (3x2 – 5) (4 + 4x2), expand using algebraic expressions and answer

babunello [11817]

Answer:

- 8

Step-by-step explanation:

Given the expression

(3x² - 5)(4 + 4x²)

Each term from the second factor is multiplied by every term in the first factor, meaning

3x²(4 + 4x²) - 5(4 + 4x²) ← distribute both parentheses

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