Answer:
200 kg
Step-by-step explanation:
If w is the amount of water added, then the concentration of the solution is ...
salt/solute = 100(0.30)/(100 +w) = 0.10
30 = 10 +0.10w . . . . . simplify
20 = 0.10w . . . . . . . . subtract 10
20/0.10 = w = 200 . . . . divide by 0.10
200 kg of water must be added to dilute the solution to 10%.
Hey there!
In order to turn a fraction into a decimal, simply divide the numerator by the denominator. The numerator is the top part of the fraction while the denominator is the bottom part of the fraction.
So,

as a decimal would be 0.9. Simply divide 9 by 10
Answer: 0.9
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Answer:
D.
Step-by-step explanation:
The number which multiplies x is the slope of the graph so 13x becoming 3x means the slope of the graph will change.
Step-by-step explanation:
We have,
The wavelength of yellow light, 
Frequency of yellow light, 
It is assumed to find the speed of light in the yellow light.
The speed of a wave is given in terms of wavelength and frequency as :

So, the speed of light in a shade of yellow light is
.