How do u solve this?

Mathematics

1 answer:

vlabodo [156]4 years ago

4 0

$\text{The formula of an area of a triangle:}\\\\A_\triangle=\dfrac{1}{2}bh\\\\b-base\\h-height\\----------------------\\\\\text{We have}\\\\b=41\dfrac{1}{2}ft=\dfrac{41\cdot2+1}{2}ft=\dfrac{83}{2}ft\\\\h=36ft\\\\\text{Substitute:}\\\\A_\triangle=\dfrac{1}{2}\left(\dfrac{83}{2}\right)(36)=\left(\dfrac{83}{\not4_1}\right)(36\!\!\!\!\!\!\diagup^9)=(83)(9)=747\ ft^2\\\\\\Answer:\ \boxed{A_\triangle=747\ ft^2}$

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Artyom0805 [142]

Answer:

0.14% probability of a person guessing the right combination

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the numbers are selected is important. For example, 1,3,2 is a different combination than 3,1,2. So we use the permutations formula to solve this question.

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

$P_{(n,x)} = \frac{n!}{(n-x)!}$