Answer:
Step-by-step explanation:
The system of linear equations that Beatrice wanted to solve by the method of elimination is expressed as
4x − 3y = 9 - - - - - - - - -1
3x + 2y = 11 - - - - - - - - - - 2
In order to eliminate the x- terms, Beatrice could multiply the first equation by 3 and the second equation by - 4 and add the first equation to the second equation. This would make the x terms to be equal. The x terms in the first and second equations becomes 12x and - 12x
Answer:
Step-by-step explanation:
If a given variable varies inversely with another variable, an increase in the value of the given variable would cause a corresponding decrease in the value of the other variable. Also, a decrease in the value of the given variable would cause a corresponding increase in the value of the other variable.
If y varies inversely with x, we would introduce a cost of variation, k so that the expression becomes
y = k/x
When y = 0.25, x = 8
Substituting into the expression above, it becomes
0.25 = k/8
k = 0.25 × 8
k = 2
The inverse variation function is
y = 2/x
25 % of 48 is 12
<em><u>Solution:</u></em>
Given that we have to find what percent of 48 is 12
Let "x" be the required percent
From given statement,
what percent of 48 is 12
Let us say,
x percent of 48 is 12
Writing it mathematically we get,
x % of 48 is 12
Evaluate the above expression to find "x"
Thus 25 % of 48 is 12
