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Fynjy0 [20]
3 years ago
15

What is the value of 2(x+y)² when X=3 and Y=4 ?

Mathematics
2 answers:
Nina [5.8K]3 years ago
8 0

Answer:

{2(3 + 4)}^2 \\ 2 \times 14 \\ 28

Nadya [2.5K]3 years ago
3 0

Answer:

98

Step-by-step explanation:

2 (x + y) ²

= 2 (3 + 4 ) ²

= 2 x 7²

= 2 x 49

=  98

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Step-by-step explanation:

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spayn [35]

Answer:

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Step-by-step explanation:

6 0
3 years ago
What is the solution to the system of equations below?
sattari [20]

Answer:

<h2>x = 9, y = -36 → (9, -36)</h2>

Step-by-step explanation:

y=-3x-9\qquad(1)\\\\y=\dfrac{1}{3}x-39\qquad(2)\\\\\text{Substitute (1) to (2)}\\\\-3x-9=\dfrac{1}{3}x-39\qquad\text{multiply both sides by 3}\\\\-9x-27=x-117\qquad\text{add 27 to both sides}\\\\-9x=x-90\qquad\text{subtract}\ x\ \text{from both sides}\\\\-10x=-90\qquad\text{divide both sides by (-10)}\\\\x=9

\text{Put the value of x to (1):}\\\\y=-3(9)-9\\\\y=-27-9\\\\y=-36

7 0
3 years ago
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