Answer:
<em>The first step is to determine the average
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<em>The exercise says it’s a normal distribution: (n=8)</em>

<em>According to the exercise, the mean is equal to 0,5 then the value of t of the distribution can be obtained
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<em>The variable t has 7 grade to liberty, we calculate the p-value as:
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This value is very high, therefore the hypothesis is not rejected
<span>If you want to know the domain of a function through its graph, I simply have to "scan" the graph of the function from left to right along the X axis and see the ranges of values of the x for which it exists a value on the Y axis. In this graph it is observed that for any value of X there will be a value of Y, so that the domain of the graph function is all the real values of X</span><span>
the domain of the graphed function is</span><span>
{x | x is a real number}</span>
In the given question, it is required to solve an inequality. The equation that needs to be solved is:
a/-8 + 15 <span>> 23
a/-8 </span><span>> 23 - 15
a/ -8 </span><span>> 8
a </span><span>> 8 * (-8)
a </span><span>> -64</span>
This is way to solve this inequality. I hope i have made it clear for you do solve such inequality problems in future and also hope that this was the answer you were looking for.
Answer:
t = 8 seconds
Step-by-step explanation:
Since this is a quadratic equation, there will be two values for which H = 0, (the ball is on the ground), so we'll just solve the equation and the first value will be the moment when the cannonball is launched, and the other will be when the cannonball falls to the ground.
0 = -5t² + 40t
Factorizing, since the two terms are being multiplied by t:
t(40 - 5t) = 0
the equation is true whenever t = 0 or t = 8, so we know that at the zeroth second, the ball was being launched, and at the 8th second, the ball was on the ground.
Here is how the graph looks like:
False. Obtuse is always greater than 90°.