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kifflom [539]
3 years ago
5

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

Mathematics
2 answers:
Wewaii [24]3 years ago
5 0

Answer:

a=3

Step-by-step explanation:

This should be very simple, just substitute xy and y for 5 and 7 respectively, so 5a-2*7=1, or 5a-14=1, or 5a=15, if we divide both sides by 5, we get a=3

yanalaym [24]3 years ago
4 0

Answer:

A=3 5a-14=1

Step-by-step explanation:

Add 14 to both sides then divide 5 and 15 to get 3

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Cual es el resultado de la operacion algebraica: 25x+12x+31x-8x+5x
Tema [17]

Answer:

65x

Step-by-step explanation:

Observe que estos son terminos similares... por lo que podemos simplemente sumarlos y restarlos. Entonces obtenemos:

25x + 12x + 31x - 8x + 5x

= 37x + 31x - 8x + 5x

= 68x - 8x + 5x

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7 0
3 years ago
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Answer:

radius ≈ 17.0 units

Step-by-step explanation:

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r = \sqrt{(7+6)^2+(12-1)^2}

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  = \sqrt{169+121}

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4 0
3 years ago
Help on numbers 1 and 2<br> any question, 1 or 2.
geniusboy [140]
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6 0
4 years ago
Stacy owns a hair salon and haircuts are $10. She charges hairdressers $20 per hour to rent a chair and serve clients. What is t
andrew-mc [135]

Answer:

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Step-by-step explanation:

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3 years ago
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Answer:

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11

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Step-by-step explanation:

8 0
4 years ago
Read 2 more answers
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