Question

What is the value of x?

Answer 1

According to the problem, think of a triangle with:

leg 1
`(a)` = 28

leg 2
`(b)` = 21

Hypotenuse
`(c)` = 5x

-So, to find the missing hypotenuse, you need to use the "Pythagorean Theorem" in order to solve and get the hypotenuse:

`a^2+b^2=c^2`

`28^2 + 21^2 = (5x)^2`

Then, start solving:

`28^2 + 21^2 = (5x)^2`

`781 + 441 = 25x ^2`

`1225 = 25x^2`

`25x^2 = 1225`

`(25x^2)/(25) =(1225)/(25)`

`x^2 = 49`

`√(x^2) = √(49)`

`x =7`

-Since, the hypotenuse has length of 5x meters, this could mean:

`5x = 5* 7= 35`

So, the answer is
`x = 7`

Answer 2

variable 2x+3=7x sgf 8ruuu477487748363547383736383736387464u47y4g4