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Bezzdna [24]
3 years ago
14

It is known that:the pair of variables x=5, y=7 is the solution to the equation ax–2y=1. Find the coefficient a.

Mathematics
2 answers:
kicyunya [14]3 years ago
8 0

Answer:

a = 3

Step-by-step explanation:

Fill in the given values:

a*5-2*7 = 1 =>

5a = 1 + 14

a = 15/5 = 3

Ierofanga [76]3 years ago
4 0

Answer:

a=3

Step-by-step explanation:

First, you replace the variables x and y in the equation with their respectful values, making the equation 5a-2(7)=1.

Then, you simplify the -2(7), which equals 14, making the equation 5a-14=1.

Then, you add 14 from both sides, making the equation 5a=15.

Finally, you divide both sides by 5, making the answer a=3.

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Novosadov [1.4K]
I encountered this problem before but it had an accompanying image and list of answer choices.

I'll attach the image and include the list of options. 

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3 years ago
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7 0
3 years ago
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fiasKO [112]

Answer:

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Step-by-step explanation:

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Answer:

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