How many arrangements are there using the word INUKSHUK that begin with letter u

Answer;If we measure the shadow of the monument and the shadow of one of the persons, at the same moment, we can use the first Thales' Theorem to calculate the height of the inushuk, knowing the height of the person.  

It should be noted that to apply Thales' Theorem, it is necessary to establish the two triangles are similar, that is, that they have the corresponding angles equal or that their sides are proportional to each other.  

Having this established, the theorem is:  

Two triangles are similar when they have equal angles and proportional sides  

In this case of the inukshuk and the person, we have two similar triangles (Figure attached) where  is the height of the inukshuk,  is the height of the person,  is the length of the shadow of the inukshuk and  is the length of the shadow of the person.  

In addition, because both triangles are similar, their angles are similar as well. This means that the relation between two sides of the big triangle is equal to the relation between two sides of the small triangle:  

All these lengths can be directly measured, except H, which is the value we want to to find.  

So, in order to approach this problem we have to find H from equation (1):  

step-by-step explanation:

how many centimeters did the level of the salsa go down by?

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column