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Math

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PROBLEM

Questions à choix multiples
(1) Quel point appartient à l'ensemble-solution de l'inéquation 2x+5y<242 x+5 y<24 ?
a) A(7,2)A(7,2)
b) B(2,7)\mathrm{B}(2,7)
(c)) C(3,5)\mathrm{C}(-3,5)
d) D(5,3)D(5,3)

STEP 1

1. We are given the inequality 2x+5y<242x + 5y < 24.
2. We need to determine which point among the given options satisfies the inequality.

STEP 2

1. Substitute each point into the inequality.
2. Check if the inequality holds true for each point.
3. Identify the point(s) that satisfy the inequality.

STEP 3

Substitute point A(7,2)A(7,2) into the inequality 2x+5y<242x + 5y < 24.
2(7)+5(2)=14+10=24 2(7) + 5(2) = 14 + 10 = 24

STEP 4

Check if the inequality holds for point A(7,2)A(7,2).
Since 242424 \not< 24, point A(7,2)A(7,2) does not satisfy the inequality.

STEP 5

Substitute point B(2,7)B(2,7) into the inequality 2x+5y<242x + 5y < 24.
2(2)+5(7)=4+35=39 2(2) + 5(7) = 4 + 35 = 39

STEP 6

Check if the inequality holds for point B(2,7)B(2,7).
Since 392439 \not< 24, point B(2,7)B(2,7) does not satisfy the inequality.

STEP 7

Substitute point C(3,5)C(-3,5) into the inequality 2x+5y<242x + 5y < 24.
2(3)+5(5)=6+25=19 2(-3) + 5(5) = -6 + 25 = 19

STEP 8

Check if the inequality holds for point C(3,5)C(-3,5).
Since 19<2419 < 24, point C(3,5)C(-3,5) satisfies the inequality.

STEP 9

Substitute point D(5,3)D(5,3) into the inequality 2x+5y<242x + 5y < 24.
2(5)+5(3)=10+15=25 2(5) + 5(3) = 10 + 15 = 25

SOLUTION

Check if the inequality holds for point D(5,3)D(5,3).
Since 252425 \not< 24, point D(5,3)D(5,3) does not satisfy the inequality.
The point that satisfies the inequality is:
C(3,5) \boxed{C(-3,5)}

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