Which equation shows the correct use of the Distributive Property? −4(32x−12)=−15
2 answers:
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Answer:
B. 200 doses
Step-by-step explanation:
Given,
1 dose is required for 100 mg,
Since, 1 mg = 0.001 g,
⇒ 100 mg = 0.1 g
⇒ 1 dost is required for 0.1 g,
Thus, the ratio of doses and quantity ( in gram ) is
Let x be the doses required for 20 grams,
So, the ratio of doses and quantity is
Hence, 200 doses can be obtained from 20 grams of the drug.
Option 'B' is correct.
Answer:
Step-by-step explanation:
The point of intersection of
and
is the solution of the two equations.
We add equation (1) and equation(2) to get,
We put into equation (1) to get,
Therefore the line passes through the point, .
The line also passes through the point of intersection of
and
We subtract equation (3) from equation (4) to obtain,
We substitute this value into equation (4) to get,
The line also passes through
The slope of the line is
The equation of the line is
is the required equation