Answer:
y)(x 2) salamat po sana maka tulong
You can combine variables that are the same such as 6x and 8x, and y and y. that would end up being 14x+2y+z
Answer:
no pictures
Step-by-step explanation:
there's no pictures so I'm not sure what to base off of
1. a) 2 : x = 1 : 100
1 : 0.5x = 1 : 100
0.5x = 100
x = 200
b) x : 2.25 = 1 : 12
2.25 = 12x
x = 0.1875
c) 1.6 : 6.4 = 1 : x
1 : 4 = 1 : x
x = 4
d) 1.5 : x = 1 : 500
x = 500 x 1.5
x = 750
2. Since 1 cm = 2 inches and the height given is 4 cm, the bottle's height is (2 x 4) inches, that is, 8 inches.
3. Since 1 cm = 0.8 m, the length of the car is (5 x 0.8) m = 4 m.
I hope this helps! If you have any questions, feel free to ask.
This problem is easily solved without system of equations.
Bottle + water = 1000 g
bottle + 1/3 water = 640 g
Subtract to get 2/3 water = 360 g
so water weighs 360/(2/3)=540 g
bottle weighs 1000-540=460 g
Using equations
B=weight of bottle
W=weight of water
the two equations are
B+W=1000
B+W/3=640
For the purpose of the question, use x=bottle, y=water.
However, it is always a better idea to use letters that tell you something than x, y.
