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sleet_krkn [62]
3 years ago
13

Help me find y please​

Mathematics
1 answer:
Andreyy893 years ago
3 0

Answer:

103

Step-by-step explanation:

it has to add up to 180 so

180-77=103

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Is 2 , -5 a solution to this system equation 2x + 5y = -19, 6y - 8x = -54 .? Justify your answer
Andreas93 [3]
The easiest way to solve this problem is to put (2, -5) into both equations and see if it satisfies/works for both of them. 2 = x and -5 = y.

So for <span>2x + 5y = -19, 
</span><span>2(2) + 5(-5) = -19
4 - 25 = -19
-21 </span><span>≠ -19.

You can continue and try it out for </span><span>6y - 8x = -54 
6(-5) - 8(2) = -54
-30 - 16 = -54
-46</span> ≠ -54

But since (2, -5) already doesn't work for one equation, it cannot be a solution to the system of equations.
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nevsk [136]

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5 0
3 years ago
What is the solution to x2 = 225?
Blababa [14]

Answer:

x = ± 15

Step-by-step explanation:

Given

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What is the value of -4x + 12 if x = -4
Nezavi [6.7K]

Answer:

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