Which types of reasons are not valid in a mathematical proof?
2 answers:
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Answer:
Step-by-step explanation:
We define X the random variable that represent the heights of a population for ten year old children, and for this case we know the distribution for X is given by:
Where and
We want to find this probability:
We can use the z score formula to solve this problem given by:
Using this formula we have:
And we can find this probability with this difference
We can use tables for the normal standard distribution, excel or a calculator and we got this
Answer:
c)11√2
Step-by-step explanation:
Given that two of the angles are equal ,each measuring 45 degrees then two legs will be equal as well each measuring 11 units. We have a right angled triangle with two sides given and we are required to determine the hypotenuse. We use Pythagoras theorem;
hypotenuse^2 = 11^2 + 11^2
hypotenuse ^2 = 242
hypotenuse =
hypotenuse =