Start by proving to them that the number 0.57 can be converted into a fraction . A whole number can't exactly be put in to a fraction. 0.57 can be converted to 14.25/25. This information means that 0.57 IS a rational number. Hope this convinced them!
In a right rectangle, we have:


For your exercice, hypotenuse=12
The exercise also inform the angle 60°, then:

Technically no. It extends forever in the X and Y axis, but does not have a Z axis.
Answer:
109.2-23.6 = 85.6
Step-by-step explanation:
use bodmas
B=bracket
O=of or multiplication
D=division
M=multiplication
A=addition
S=subtraction
so when you are opening a bracket you multipli the number in the bracket with the one outside the bracket
I.E
4×27.3=109.3
4×5.9=23.6
109-23.6=85.6
No. Solve each of the problems and see if they match. Do PEMDAS order of operations