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Zorluk: KolaySystems of Linear Inequalities in Two Variables

A florist is making bouquets. Each small bouquet requires 22 roses, and each large bouquet requires 55 roses. The florist has at most 4040 roses available for these bouquets. Additionally, the florist wants to make more than 1010 bouquets in total. If xx represents the number of small bouquets and yy represents the number of large bouquets, which of the following systems of inequalities represents this situation?

  1. A
    2x+5y402x + 5y \geq 40 and x+y<10x + y < 10
  2. B
    5x+2y405x + 2y \leq 40 and x+y>10x + y > 10
  3. 2x+5y402x + 5y \leq 40 and x+y>10x + y > 10Cevap
  4. D
    2x+5y102x + 5y \leq 10 and x+y>40x + y > 40

Cevap

The system of inequalities 2x+5y402x + 5y \leq 40 and x+y>10x + y > 10.
The correct system of inequalities matches the constraints given in the problem. The total number of roses used by xx small bouquets and yy large bouquets is 2x+5y2x + 5y. Since the florist has at most 4040 roses, this is represented by 2x+5y402x + 5y \leq 40. The total number of bouquets is x+yx + y. Since the florist wants to make more than 1010 bouquets, this is represented by x+y>10x + y > 10.

Adım Adım Çözüm

1
Identify the inequality representing the constraint on the total number of roses.
2x+5y402x + 5y \leq 40
Each small bouquet uses 22 roses (2x2x) and each large bouquet uses 55 roses (5y5y). The total roses must be 'at most' 4040, which corresponds to the inequality symbol \leq.
2
Identify the inequality representing the constraint on the total number of bouquets.
x+y>10x + y > 10
The total number of bouquets is the sum of small bouquets (xx) and large bouquets (yy). The florist wants 'more than' 1010 bouquets, which corresponds to the inequality symbol >>.
3
Combine the two inequalities into a single system.
The system is 2x+5y402x + 5y \leq 40 and x+y>10x + y > 10.
Both conditions must be met simultaneously.

Anahtar Kavram

Translating real-world constraints into a system of linear inequalities in two variables.
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