Answer:
expression
Step-by-step explanation:
An expression is a number, a variable, or a combination of numbers and variables and operation symbols. An equation is made up of two expressions connected by an equal sign.
pressure=force/area
2000. ×area =10
area. =10/2000
area =0.005cm²
I think its x=48
a) 4:7:3
b) 4:7 / 20:35
c) 3:7 / 15:35
