Answer: x=9
you can reduce multiply to show your work
3• 1/3x = 3•3
9=9
Answer:
5r^3 + 4r^2 - 8r + 16
Step-by-step explanation:
(8 + 5r^3 - 2r^2) - (8r - 8 - 6r^2) =
The first set of parentheses is there just to show you that what is inside is a polynomial. The second set of parentheses has a second polynomial inside. The subtraction sign just to the left of the second set of parentheses shows that you are subtracting the second polynomial from the first one.
The first set of parentheses is not needed and can be dropped.
You are subtracting the second polynomial fromt he first one, so you can think of the the subtraction sign as a -1, and you need to distribute the -1 by the second polynomial, That will result in all signs inside the second set of parentheses changing.
Below, just the first set of parentheses is removed.
= 8 + 5r^3 - 2r^2 - (8r - 8 - 6r^2)
Now, we change every sign inside the second set of parentheses by distributing -1.
= 8 + 5r^3 - 2r^2 - 8r + 8 + 6r^2
Now we need to combine like terms. Like terms have the same variable part. We can rearrange the terms grouping like terms together before combining them. Also, it is customary to list the terms in descending order of degree.
= 5r^3 - 2r^2 + 6r^2 - 8r + 8 + 8
Now we combine like terms.
= 5r^3 + 4r^2 - 8r + 16
Answer:
The answer is "17 students with Mr. Green take exactly two courses".
Step-by-step explanation:
Following are the calculation to this question:
Alone band 11
Alone chorus 17
Choir and band alone 4
7 Maths alone and the band
Choir and Math alone 6
Chorus and Math Band 3
mathematics alone 9 +11+4+10+6+17 + M = 57
so
2 classes = 4+7+6 = 17
So, there are 17 students with Mr. Green take exactly two courses.
Answer:
B
Step-by-step explanation:
y(2) - y(1)/x(2) - x(1)=5-3/-2-2=2/-4
