-- The average of 6 numbers is 7.
So those 6 numbers must add up to 42.
-- If one more number results in an average of zero,
the new number must be -42 .
Then all 7 numbers add up to zero.
Answer:
20y + 5x
Step-by-step explanation:
Combine like terms
12y + 5x + 8y
20y + 5x
Twelve hundred times three equals 3600 so in 3 years it will cost 3600
Answer:
-1
Step-by-step explanation:
-49-35x+x=-3x-18
-49-34x=-3x-18
-34x+3x=-18+49
-31x=31
-31x/-31=31/-31
ansx=-1
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