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ivann1987 [24]
3 years ago
13

The sum of two numbers is 39. Their difference is 21. What are the two numbers?

Mathematics
2 answers:
Yanka [14]3 years ago
6 0

Answer:

30 and 9

Eeexplination;

mrs_skeptik [129]3 years ago
4 0

Answer:

30 and 9

Step-by-step explanation:

x+y=39 , x-y=21

Solve for x:

x+y=39 , x-y=21

x= 30

Substitute x with 30:

(30)+y=39 , (30)-y=21

Solve for y:

y=9

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A rectangular table top has dimensions as 1.52m and 0.75m. Find the perimeter in cm
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That is a question about perimeter of rectangle.

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So, the sides of that rectangular table are: 1.52m, 1.52m, 0.75m and 0.75.

Therefore, the perimeter of that rectangle is 1.52+1.52+0.75+0.75= 4.54m.

But that is not the final answer because that is the perimeter in meters and the question want the answer in centimeters.

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