The reason fractions need a common denominator before adding or subtracting is so that the numbers of pieces you are adding/subtracting are all the same size. Note that the numerator of a fraction just tells you how many pieces you have of that size.
Answer:
C
Step-by-step explanation:
3x^2 * -x =-3x^3
3x^2 * 2. =6x^2
4x* -x =-4x^2
4x * 2 = 8x
-5 * -x = 5x
-5 * 2 = -10
6x^2 + -4x^2 = 2x^2
8x+5x = 13 x
Ans: -3x^3 + 2x^2 + 13x -10
A= 1,3
B= 5,5
C= 6,1
Here you go
Answer:A,C,E
Step-by-step explanation:
Answer:
$22.67
Step-by-step explanation:
The school spends 635.85 dollars on passes for 43 students and 2 teachers, then the school spends
per person.
The school also spends 367.22 dollars on lunch for just the students, so the school spends
per person.
In total, a pass and lunch for each student was spent
