2 rooms would be 62+42 which is 104
3 rooms would be 104+42 which is 146
4 rooms would be 146+42 which is 188
5 rooms would be 188+42 which is 230
6 rooms would be 230+42 which is 272
but these are the prices including the 20$
without the 20$ the prices would be
2 rooms is 84
3 rooms is 126
4 rooms is 168
5 rooms is 210
6 rooms is 252
Step-by-step explanation:
2x-10x= -4y-y
-8x= -5y
cancel (-) on both sides we get
8x=4y
So you want to make one of the equations equal to one of the placeholders exg y=x+3
so we have
x+y=2 and
-2x+y=2
I chose to make -2x+y=2 equal to y so
-2x+y=2
add 2x to both sides
y=2+2x
subsitute 2+2x for y in x+y=2
x+2+2x=2
add like terms
3x+2=2
subtract 2 from both sides
3x=0
x=0
subsitute x=0 in x+y=2
0+y=2
y=2
x=0
y=2
Answer:
im not sure if it right or not because im stupid but i guess 6.5
Step-by-step explanation:
So we have two shapes that are exactly the same. All their sides are of equal length. The combined perimeter is 80 cm. Since they're identical, we can safely say that the perimeter of EACH figure is 40 cm. Let's work from that. Remember, the perimeter is the length of all the sides of a figure added together.
What's the first shape that comes into your mind when you think of "equal length sides"? Probably a square: a four-sided shape where all the sides are the same length. If this were a square, and its perimeter is 40 cm, then the length of each side is 1/4 of 40 cm, right? (Because there are 4 sides, and the perimeter is the length of all the sides combined.) This would make the length of each side 10 cm.
Let's check. If each side is 10 cm, and all 4 sides of the square are equal (which they are), the perimeter of each square is 40 cm. The combined perimeter is 40+40=80 cm. This works!
Answer: The figures are squares; each side is 10 centimeters long.
