Respuesta :
Answer:
x = 4
Step-by-step explanation:
Assuming these are similar triangles,we can use ratios to solve
3x+8 25
---------- = ------
4 5
Using cross products
5(3x+8) = 4*25
Distribute
15x +40 = 100
Subtract 40 from each side
15x+40-40 = 100-40
15x= 60
Divide each side by 15
15x/15 = 60/15
x =4
First, find the scale factor between both triangles.
25 / 5 = 5
15 / 3 = 5
Second, multiply to find the missing side length.
4 * 5 = 20
Third, solve for x.
3x + 8 = 20
3x + 8 - 8 = 20 - 8
3x = 12
3x/3 = 12/3
x = 4
Best of Luck!