Answer:
h(t) = 4.68 seconds
Step-by-step explanation:
The function that represents the height of each firework in feet is :
.....(1)
We need to find the time the fireworks take to reach their maximum height. For maximum height,
dh/dt = 0
So,
Put t = 4.68 in equation (1).
So, the fireworks will take 4.68 seconds to their maximum height.
Answer:
(x-2)(x+1)
Step-by-step explanation:
x²-x-2 can be factored into:
(x-2)(x+1)
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Using the Empirical Rule, it is found that 95% of the candies have weights between 0.7 and 0.98 gram.
<h3>What does the Empirical Rule state?</h3>
It states that, for a normally distributed random variable:
- Approximately 68% of the measures are within 1 standard deviation of the mean.
- Approximately 95% of the measures are within 2 standard deviations of the mean.
- Approximately 99.7% of the measures are within 3 standard deviations of the mean.
Researching this problem on the internet, we have that:
- The standard deviation is of 0.07.
Then 95% of the candies have weights between 0.7 and 0.98 gram, as:
More can be learned about the Empirical Rule at brainly.com/question/24537145
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Follow the order of operations
1. parentheses (13+5) = 18
2. multiplication 21*(13+5) = 21*18 = 378
3. add 9 + 21*(13+5) = 9 + 378 = 387
Hope this helps!
