Row A is incorrect, because 3 times 4 is 12 and 12 + 5 = 17 not 20.
Answer:
x = 30
Step-by-step explanation:
m<E = [m(arc)AD - m(arc)BC]/2
50 = (130 - x)/2
100 = 130 - x
-x = -30
x = 30
Answer:
1:6 and 8:48
Step-by-step explanation:
Answer:
25;41;8;21
Step-by-step explanation:
a) 48=d+23
48-23=d
d=25
b) W-13=28
28+13=W
W=41
c) 9x=72
72/9=x
x=8
d) 84=4n
n=84/4
n=21