Answer:
6ab + -3a2
Step-by-step explanation:
2ab(4a2 + 3ab - 7b2) original problem
2ab(3ab + 4a2 - 7b2) commutative property
2ab(3ab + -3a2) subtract
4 - 7 = -3
6ab + - 3a2 mulitiply
2ab x 3ab = 6ab
and that is you final expression, you can't add the last 2 numbers cause they are not like terms.
Answer:

Step-by-step explanation:
Distance Formula: 
Simply plug in your 2 coordinates into the distance formula to find distance <em>d</em>:







Answer:
yo that's too hard it should be 20 points
Using empirical rule,
Upper range of 68%=15+5=20
Lower range =10
Range=10
Answer:
The answer is -4.5
Step-by-step explanation:
according to my calculation