Let x, y and z be non-zero numbers. If x: y = 3 : 1 and y: z = 4:3, find (x + z) : (x + y). Please help me to solve this question with steps, thanks!orz

 15 : 16

Step-by-step explanation:

x : y              y : z

3 : 1              4 : 3

Find the LCM for both y's.  LCM = 4

     x : y                        y : z

3(4) : 1(4)                      4 : 3

 12 :  4                         4 : 3

-->    x : y : z = 12 : 4 : 3

 (x + z) : (x + y)

12 + 3 : 12 + 4

   15   :     16

here you hope this .

step-by-step explanation:

hypotenuse = √(15² + 8²)

=  √(225 +64)

=  √(289) = 17

sin(x) = cos(y) = 8/17

they are identical so long as you are doing the sine of one angle and the cosine of the only other angle that isn't the right angle.

312312

step-by-step explanation: