Answer:
See below
Step-by-step explanation:
1. there are 3 feet in a yard.
135/3=45
45 Yards
2. There are 10 meters in 1 dekameter
he has 8 dekameters
10*8=80
he can cut 80 1-meter pieces of ribbon
Answer: 
Step-by-step explanation:


Answer:
17x - 7
Step-by-step explanation:
-2x + 8x - 9 + 4x + 7x + 2
6x - 9 + 4x + 7x + 2
6x - 9 + 11x + 2
17x - 9 + 2
17x - 7
Answer:
Step-by-step explanation:
z score= x - mean/standard deviation
1.20= x -100/15
18= x -100
118=x
z score= x - mean/standard deviation
0.5=x-73/4
2=x-73
75= x