After you combine like terms you will get 5p - 9m.
-3p + 8p is the same thing as 8p - 3, so you get 5p.
-2m + (-7m) is -9m
-3p and 8p are like terms.
-2m and -7m are also like terms.
Answer:
Is that the full question?
Step-by-step explanation:
X= 9th student test score
Add the 9 test scores and divide that total by 9 to equal the average.
(56 + 92 + 78 + 64 + 85 + 83 + 91 + 77 + x)/9= 78
add in parentheses
(626 + x)/9= 78
multiply both sides by 9
626 + x= 702
subtract 626 from both sides
x= 76
ANSWER: 76 is the score needed by the 9th student for a mean of 78.
Hope this helps! :)
Answer:
Step-by-step explanation:
3x^2 + 7x + 9x^2 - 3x + 2
3x^2 + 9x^2 + 7x - 3x + 2
12x^2 + 7x - 3x + 2
Answer: 12x^2 + 4x + 2
This should be correct unless i'm dumb...
