Answer: 52 1/2
Step-by-step explanation: I just found the average of the numbers.

is given
here ,
or,

or,

or,7x²+3x-4=-4
or,7x²+3x=0
or,x(7x+3)=0
Either,x=0| Or,7x+3=0
|or,7x=-3
|or,x=

So , the solution set is S={0,-

}
Answer:

Step-by-step explanation:

Apply rule 

Multiply the numbers: 

First 8.58
Second 8.508
Third 7.5
Fourth 7.058
Seven hundred seventy thousand and seventy