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Kruka [31]
3 years ago
10

The sum of two numbers is 13, the difference is 4. What are the numbers?.

Mathematics
1 answer:
Rama09 [41]3 years ago
6 0

Answer:

a = 8.5

b = 4.5

Step-by-step explanation:

let 2 number be a ,b

a + b = 13  (1)

a - b = 4    (2)

(1) + (2) = 2a = 13+4 = 17 -> a = 8.5

-> b = 8.5 -4 = 4.5

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Hello thee i hope you are having good day :) Your Question: 15-foot piece of string is cut into two pieces so that the longer piece is 3 feet longer than twice the shorter piece. If the shorter piece is x feet long, find the lengths  of both pieces.

so firstly you would do  L = 3 + 2x  S = x  X + (3 + 2x) = 15  X + 3 + 2x = 15

3x + 3 = 15  then you would take away that 3x = 15 - 3  this would equal 12 so x = 4 and then add it 3+ 2x = 3+2 (4) = 3 + 8 = 11   Short piece is 4 feet  Long piece is 11 feet.

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