Answer:
Step-by-step explanation:
The first questions are answered on the attachment.
C. There are many solutions
4(5)-1=19
4(10)-1=39
Answer: b=14.7
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
5+15-8/4=
5+15-4=
16
Answer:
Step-by-step explanation:
for missing angle of triangle ABC
let the missing angle be y
31+111+x=180(sum of interior angle of a triangle is 180 degree)
142+y=180
y=180-142
y=38 degree
x=y(being alternate angles)
x=38 degree