WILL GIVE BRAINIEST, HELP ME ASAP, how do I solve this? What is x?

x = 8

Step-by-step explanation:

As the triangle has 2 congruent angles, this means that their corresponding sides are of equal measure.

Therefore, -4 + 2x = 12

Add 4 to each side:  2x = 16

Divide both sides by 2:  x = 8

52 minutes and 30 seconds

Step-by-step explanation:

You know that Yuto has ridden for 5.25 miles when Riko left their house and you need to know and what time they will be together:

Then you can say that:

5.25 miles+(yutos speed)*t= (Rikos speed)*t

when t=Time in minutes when they will be together

5.25 miles+(0.25miles/min)*t= (0,35miles/min)*t

5.25miles=(0.35miles/min-0.25miles/min)*t

5.25miles/(0.35miles/min-0.25miles/min)=t

t=52.5 min =52 minutes and 30 seconds