I need help to solve please

y = 8; x = 6 ; n = 1 ; p = 55

Step-by-step explanation:

First proportion

// How to solve it

// firstly, multiply both sides by y, so that y would be in numerator

=

// now we get

= 8

// secondly, divide both sides by , so that we'd have y on one side and the expression on the other side

y =

// since = 1

y = 8

Second proportion

// divide both sides by 22, so that there'd be unknown variable x on one side and the expression on the other side

x =

Is this y from the first proportion?

If so, then x = = = = 6

Third proportion

// divide both sides by 5

n = = = 1

Fourth proportion

// divide both sides by 10

p = = 55

the equation is going to be

the diagram shows you   triangle def with de=4, df=9 and de≠df≠ef.

the sum of the lengths of two triangles' sides are always greater than the length of the third side:

substitute sides lengths:

then 5< ef< 13 (option 3 is true).

def is a scalene triangle with all sides of different lengths (option 5 is true, option 2 is false).

answer: correct choices are 1, 3 and 5