9514 1404 393
Answer:
- x + y + z = 500
- 2.50x +1.75y +3.20z = 1172.50
- 0x +y -z = 100
Step-by-step explanation:
Let x, y, z represent the numbers of cheeseburgers, plain burgers, and chicken burgers ordered for the party.
We have three relations given. Each can be used to write an equation.
x + y + z = 500 . . . . . . . . . a total of 500 meals were ordered
2.50x +1.75y +3.20z = 1172.50 . . . . . the total cost
0x +y -z = 100 . . . . . . . . . . 100 fewer chicken were ordered than plain
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<em>Additional comment</em>
We put the coefficient of x as 0 in the last equation to facilitate writing this system as an augmented matrix.
The solution is (x, y, z) = (300, 150, 50).
One side length is 81 inches by setting up a proportion. so the perimeter 324 and the area is 6561
Answer:
5--20yellow pencils
7-- 28 yellow pencils
9-- 32 yellow pencils
11- 44 yellow pencils
13-52 yellow pencils
Step-by-step explanation:
- 5×4=20
- 7×4=28
- 9×4=36
- 11×4=44
- 13×4=52
L= 5X+1 W= 2x+5. X=1 L= 6 W= 7 (SU= 26)
<span>17⁄40 simplest form. ..........
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