2(4z-9-11)=166-46
8z-18-22=120
8z-40=120
Add 40 from both side
8z-40+40=120+40
8z=160
Divided 8 from both side
8z/8=160/8
z=20. Hope it help!
Its already in simplest form but you can convert it to a mixed fraction and get:
1 5/8
Answer:
180
Step-by-step explanation:
mark brainliest please
Answer:
a) 320 students
b) 25 students
Step-by-step explanation:
Number of 18-years old in the survey:
(We add all frequency points for each line)
0 + 30 + 20 + 60 + 70 + 40 + 60 + 40 + 0 = 320 students
Number of 18 year old spending between 25 and 35 minutes: 40 + 65 = 105
Number of 12 year old spending between 25 and 35 minutes: 30 + 50 = 80
105 - 80 = 25 students
Answer:
100 yards of fabric
Step-by-step explanation:
12 divided by 3 = 4 yards of fabric per costume
4 x 25 = 100 yards of fabric
