Flashcard 1 Review

Front

A candle burns down in a time proportional to its length. If a 12-inch candle burns down in 8 hours, how long would it take a 9-inch candle to burn down?

Back

6 hours

Front

If 76 out of 122 customers paid cash, how many out of 200 customers would you expect to pay with cash?

Back

127

Front

Simplify the fraction 24/44.

Back

6/11

Front

Express the probability that a customer will pay with a debit card if 50 out of 116 customers used a debit card.

Back

25/58

Front

Back

75

Front

What is the formula for calculating probability?

Back

Probability = (Number of favorable outcomes) / (Total number of outcomes)

Front

Define direct proportionality in the context of candle burning.

Back

Direct proportionality means that as one quantity increases, the other quantity increases at a constant rate.

Front

What is the first step in simplifying a fraction?

Back

Find the greatest common divisor (GCD) of the numerator and denominator.

Front

How do you calculate the expected value in a probability scenario?

Back

Multiply each outcome by its probability and sum the results.

Front

What does it mean to round a number to the nearest whole number?

Back

It means to adjust the number to the closest integer.