Which is not labeled correctly
7x-y=9
3x-y=5 (multiply by -1 both sides of the equation)
7x-y=9
-3x+y=-5 (now add both equations)
7x-3x-y+y=4
4x=4 (divide by 4 both sides of the equation)
x=1
y=3x-5=3×1-5=-2
y= -2
answer: x=1, y=-2
If the bases are the same then you can let the exponents be equal to each other. If the exponents are not the same then you will have to use logarithms to solve for x.
Answer:
Step-by-step explanation:
Let the yellow cubes be x
according to the question ,
blue cubes r twice of yellow
green is 4 times of blue
yellow = x
blue = 2x
green-8x
Ratio:
Yellow : Blue : Green
1 : 2 : 8
Probability of getting (Yellow) = 1/11
