Answer all questions or do not at all! i need all answered !

The triangles are similar. what is the value of x? enter your answer in the box. x = two right triangles. the larger right triangle is labeled x on the longer leg, 12 on the shorter leg and 20 on the hypotenuse. the smaller triangle is labeled 4 on the longer leg, 3 on the shorter leg, and 5 on the hypotenuse.

Can someone me with my hwplz(only the circled ones)

20 points + brainliest answer + my mom’s chocolate chip cookie ! subtract.