12:7
because you add 7 and 5 and then there is the 7 for the book weight
No. A cube is a 3D figure and polygon is a 2D one.
Answer:
256.25
Step-by-step explanation:
if you have a 20% discount then you are paying 80% if the original cost.
so 80% of the original price is 205
.80x = 205
x = 205/.80
3/4 would be .75 because you would think of 100/4 which is 25 so you multiply 3 by 25. Hope this helped!
Answer:
a) 4x - 8y
b) 4 × x - 8 × y
c) 4x - 8y is the same as 4 × x - 8 × y because if there is no simbol then it is always multiplication
Step-by-step explanation:
a) start with the parentheses
1/3 (6x - 12y)
multiply 6x and -12y by (1/3)
2x - 4y
so now the equation is 5x -3x -4y + 2x -4y
add together the like terms
5x -3x + 2x = 4x
-4y -4y = -8y
so we have 4x - 8y
b) im not good with factored form but i believe this is right
take 4x and separate them by turning it into 4 × x and same for -8y turn it into -8 × y
c) 4x - 8y is the same as 4 × x - 8 × y because if there is no simbol then it is always multiplication
im not sure how to prove them equal to the original expression i dont really remember that but i hope this helped
