Answer:
m<JKD = 22 degrees
Step-by-step explanation:
21x + 5 + 4x + 2 = 132
25x + 7 = 132
25x = 125
x = 5
m<JKD = 4x + 2
4(5) + 2
20 + 2
22
The double angle identities are


Then


The second identity together with the Pythagorean identity,
, gives us another equivalent expression:

so

64% as fraction = 64/100 4 into 64 is 16 and 4 into 100 is 25.
= 16 / 25
= 16 / 25 in simplest form.