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antiseptic1488 [7]
2 years ago
12

9.The perimeter of a rectangle whose length is 7.5cm and breadth 3.75cmRequired to answer. Single choice.​

Mathematics
2 answers:
murzikaleks [220]2 years ago
8 0

Answer:

length = 7.5

breadth = 3.75

perimeter = 2(L+B)

2( 7.5 + 3.75)

2( 11.25)

= 22.5

therefore 22.5 is perimeter

BabaBlast [244]2 years ago
3 0

Answer:

22.5 cm

Step-by-step explanation:

P = 2( L + W)

P = 2( 7.5 + 3.75)

P = 2( 11.25)

P = 22.5 cm

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The system of inequalities " x + 2 y ≤ 5 and 3 x + y ≤ 4 " is represented by the graph ⇒ D

Step-by-step explanation:

To find the answer let us find the equation of each line

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∵ m = Δy/Δx

∴ \frac{0-2.5}{5-0}=\frac{-2.5}{5}

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- The shading is under the line and the line is solid, that means

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∴ The inequality of the blue line is 2 y ≤ - x + 5

Red line:

∵ The line passes through points (3 , -5) and (0 , 4)

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∴ The inequality of the red line is y ≤ -3 x + 4

Let us find which answer is the same with this system of inequalities

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- Add x to both sides

∴ x + 2 y ≤ 5 ⇒ same as the first inequality of answer D

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- Add 3 x to both sides

∴ 3 x + y ≤ 4 ⇒ same as the second inequality of answer D

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