Time (minutes)
1 answer:
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Answer:
25
Step-by-step explanation:
Answer:
x = ±
Step-by-step explanation:
Given
ax² + b = c ( subtract b from both sides )
ax² = c - b ( divide both sides by a )
x² = ( take the square root of both sides )
x = ±
Answer:
a. 0.1587
b. 0.8849
c. 0.1814
Step-by-step explanation:
a. Given that
-The probability a randomly selected score is greater than 30.4 is calculated as:
Hence, the probability of a score greater than 30.4 is 0.1587
b. Given that
The probability a randomly selected score is less than 32.8 is calculated as:
Hence, the probability that a randomly selected score is less than 32.8 is 0.8849
c. The probability that a score is between 25.6 and 32.8 is calculated as follows:
Hence, the probability is 0.1814