Answer:
Step-by-step explanation:
192 ÷ 420 = 0.457
0.457 x 100 = 45.7
But there can't be a percentage increase or decrease because there is no percentage to compare it to, there should be information for the change in students of the last year
Answer:

Step-by-step explanation:

Combine like terms

Distribute the 7

Subtract 3m from each side

Add 7 to each side

Divide by 4

Answer:
A) 2280 and length is 12mm and width is 190mm
B) 190, 12
Step-by-step explanation:
Area of 1 cylinder: 456
456*5= 2280
38*5=190
diameter:190mm
height:12mm
190*12= 2280
Actual W/ actual height= model W/ model height
55 ft/ actual height= 1.5 in./ 15 in,
actual height=55 ft*15 in./1.5 in= 550 ft
Answer:
5
Step-by-step explanation: