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son4ous [18]
2 years ago
10

3. Find two numbers whose product is -6 and whose sum is 1.

Mathematics
2 answers:
Anestetic [448]2 years ago
5 0

Answer:

-2, 3

Step-by-step explanation:

yeah that's it I don't have any explanation or formula

Naddika [18.5K]2 years ago
3 0

let the numbers be x and y

xy = -6

x + y = 1

from x + y = 1

y = 1 - x

x(1 - x) = -6

x - x² + 6 = 0

-x² + x + 6 = 0

on solving,

x = -2 or x = 3

y = 1 - (-2) = 3

y = 1 - 3 = -2

x1 = -2, y1 = 3.

x2 = 3, y2 = -2.

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2 years ago
Trei copii au impreuna 45 de lei .
Ainat [17]

Answer:

Primul copil are 6 lei, al doilea are 12 lei, al treilea are 27 de lei.

Step-by-step explanation:

Lăsați suma primului copil să fie x.

Lăsați suma al doilea copil să fie y.

Lăsați suma al treilea copil să fie z.

Trei dintre ei au 45 de lei în total.

Aceasta înseamnă că:

x + y + z = 45 ________(1)

Al doilea are de două ori valoarea primului:

y = 2x

Al treilea are cu 15 lei mai mult decât al doilea:

z = 15 + y

=> z = 15 + 2x

Puneți valoarea y și z în (1):

x + 2x + 15 + 2x = 45

5x = 45 - 15 = 30

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=> y = 2 * 6 = 12 lei

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Primul copil are 6 lei, al doilea are 12 lei, al treilea are 27 de lei.

7 0
3 years ago
Can someone help!, Evaluate the expression 3 (7 - 4) ➗ 9 <br><br> I Need it in detail
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Answer:

your answer is 1

Step-by-step explanation:

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1

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