Answer:
272$
Step-by-step explanation:
Since it is at a sale of 20% off that means that we will have to subtract 100% from 20% which is 80%
Now to find the exact value, we will have to multiply 80%, or 0.80 with 340
0.80*340= 272$
Therefore our answer is 272$
- Hope this helped :)
-Brainliest is most appreciated :)
Answer:
I think C. is it
Step-by-step explanation:
Answer:
the equation is y= 3x - 1
Step-by-step explanation:
to find the intersection with x just substitute 0 to Y.
0=3x-1
3x=1
x=1/3
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.
