What is the length if a right triangle with a leg that measures 16 and a hypotenuse of 20

It would be 12.

Step-by-step explanation:

20*20=(16*16)+(a*a)

a=12

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.