Answer:
11
Step-by-step explanation:
The two equations appear to be ...
- 12x +4y = 152
- 32x +12y = 420
These can be solved for y using Cramer's rule:
y = (152(32) -420(12))/(4(32) -12(12)) = -176/-16 = 11
The cost of the vegetarian lunch is 11.
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<em>Comment on Cramer's Rule</em>
For equations ...
ax +by =c
dx +ey = f
The solutions are ...
x = (bf -ey)/(bd -ea)
y = (cd -fa)/(bd -ea) . . . . note the denominators are the same expression
Once you memorize the pattern of products, this can be the simplest way to solve a pair of equations--especially if you only need one of the variable values.
Any set of numbers (x, y) for which this inequality is true is a solution.
For example, the point (1, -5) is a solution because fitting it into the inequality gives us
<u>- 5 < - 2</u> which is true.
However, the point (3, 5) wouldn't be a solution because it would give us the inequality
<u>5 < 2</u> which is not true.
Mountain bike trials also it <span>is a discipline of mountain </span>biking<span> that the rider attempts to pass through an obstacle course without setting foot to ground.</span>
Answer:
₱48.33 is the cost per litter.
Step-by-step explanation:
In order to find the unit rate of an object, divide the cost by the amount of the object. 725/15=48.33
