Answer:
9
Step-by-step explanation:
total parts= 3+7=10
12=4 parts
1 part=3
3*3=9
Answer:
I think it's either 10√3 or 10
Answer:
78
Step-by-step explanation:
add them all together and and divide by how many they are -thats the meaning of the mean
81+88+69+65+87=390
390divide by 5=78
i divided by 5 becasue there are 5 numbers
Answer: try b
Step-by-step explanation:
glad i could help!
Answer: B. z-311+311=151+311
Step-by-step explanation:
You do the opposite since you want to get rid of 311