Answer:
9
Step-by-step explanation:
3(h-7)+3=9
3h-21+3=9
3h-18=9
3h=9+18
3h=27
h=27/3
h=9
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Answer:

Step-by-step explanation:

Multiply both sides by 4:


Divide both sides by 3:


total number of student in the data set in the dataset is 90
Answer:
4
Step-by-step explanation:
2+2=4
Answer:
2/5
Step-by-step explanation:
3/10÷3/4
3/10×4/3
4/10
2/5