The answer would be B-D-F
Answer:
b. t = 10.5 seconds.
Step-by-step explanation:
l = 0.81t^2
90 = 0.81t^2
t^2 = 90 / 0.81
t^2 = 111
t = 10.5 seconds.
Υм ι тнιʝк ιтѕ 300 .нσρє ιт нєℓρѕ
Answer:
In statistics, the 68–95–99.7 rule, also known as the empirical rule, is a shorthand used to remember the percentage of values that lie within a band around the mean in a normal distribution with a width of two, four and six standard deviations, respectively; more accurately, 68.27%, 95.45% and 99.73% of the values lie ...
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I recommend the app desmos for problems like this. the answer is 8.4
