Answer:
20 students per row
Step-by-step explanation:
person per each row=180/9=20
Answer:
0.42 or 21/50
Step-by-step explanation:
2/100=0.02 or 1/50
4/10=0.4 or 2/5
0.4+0.02=0.42
1/50+2/5=21/50
Answer:
-40
Step-by-step explanation:
Just multiple the 2 numbers like usual than add the negative to your answer
Answer:
$6.30
Step-by-step explanation:
What you would do is that you know 3x2 is 6 just like 8x2 is 16 but then you but the same amount for the cents so the anwser would be $6.30
Answer:
The first one is true. 5b+15=14
Step-by-step explanation:
(b+3)/7= 2/5
After cross-multiplication:
5(b+3)=2*7
5b+15=14
