Answer:
231 ml
Explanation:
Let x represent the amo unt of Dextrose 70% in ml and y represent the amount of Dextrose 5% in ml needed to prepare 1,000mL of Dextrose 20%.
Since 1000 ml of Dextrose 20% is needed, hence:
x + y = 1000 (1)
Also 70% Dextrose is mixed with 5% dextrose to produce 20% dextrose. i.e.:
70% of x + 5% of y = 20% of 1000
0.7x + 0.05y = 200 (2)
We have to solve equations 1 and 2 simultaneously.
Let us multiply equation 2 by 20:
14x + y = 4000 (3)
subtract equation 1 from 3:
13x = 3000
x = 231 ml
Put x = 231 in equation 1 to find y:
231 + y = 1000
y = 769 ml
Therefore 231 ml of Dextrose 70% must be mixed with 769 ml of Dextrose 5% to prepare 1,000mL of Dextrose 20%? *
It has encouraged both forgeries and the shadow market in antiquities.
Answer:
2 sorry if it wrong:((((((
The instructor determines that education is successful when students identify ways to keep their bodies healthy and maintain cleanliness so they don't get infections.
Immunity or the immune system in humans is the ability of a person's body to defend itself against various "enemies" or foreign objects that enter the body.
The function of the immune system is very central to the human body's defense. Without an immune system, the body will be vulnerable to attacks by germs, parasites, or viruses. The immune system also plays a role in fighting against various types of pathogens, so that your body remains in a healthy condition. Sleep patterns, stress, and poor eating patterns can reduce the immune system in the body.
Learn more about bacteriophage here :
brainly.com/question/11765850
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Answer:
Option A, Release of chemical signals by keratinocytes that have been damaged by UV light will increase the production of melanin.
Explanation:
Negtaive feedback mechanism of homeostasis maintains the stability of any internal condition or function through lessening of output of a system or through slow down of a functional system.
Here in this case the keratinocytes function is reduced by damaging them on exposure to UV light which further triggers the release of chemicals that enhance the production of melanin.
Hence, option A is correct
