Answer:
10 : 7
Step-by-step explanation:
5 out of 7 = 
3 out of 6 =
= 
Ratio
x : y
: 
: 
30 : 21
10 : 7
Im not sure what the answer is
Answer: -13
Step-by-step explanation: :)
Answer:
0.24
Step-by-step explanation:
4/5=0.8
0.8 to the power of 2 or 0.8*0.8= 0.64
2/5=0.4
0.64-0.4= 0.24
40 000 is the answer. hope that helped