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2 years ago

If y=7 when x=2 find x when y=3

1 answer:

5 0

2/7=0.28571428571428571428571428571429
0.28571428571428571428571428571429*3=0.85714285714285714285714285714286
that is a long answer but it works

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2x - 3y = 6<br> 3x + y = 32

kherson [118]

Answer:

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Step-by-step explanation:

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6 0

1 year ago

Need help with this pls!!<br> (Show work pls)

Gekata [30.6K]

Answer:

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Step-by-step explanation:

$5(x+3)+6x=147\\5x+6x+15=147\\11x=132\\x=132/11\\x=12$

5 0

2 years ago

Solve<br>(4/x)-(2/5)=(6/x)

Volgvan

The answer is x = -5

3 0

2 years ago

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Hey sisters i need help with this question

Allisa [31]

$3.2 \times 10^{7} + 6.4 \times 10^{7} = (3.2 + 6.4) \times 10^7 = 9.6 \times 10^7$

Answer: B

5 0

2 years ago

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How many solutions does the system have? y = -2x-4 \\\\ y = 3x+3

lakkis [162]

Answer:

The system has one solution.

Step-by-step explanation:

We have two equations:

y = -2x - 4

y = 3x + 3

Equalling them:

y = y

-2x - 4 = 3x + 3

5x = -7

$x = -\frac{7}{5}$

And

$y = 3x + 3 = 3(-\frac{7}{5}) + 3 = \frac{-21}{5} + 3 = \frac{-21}{5} + \frac{15}{5} = -\frac{6}{5}$

Replacing in the other equation we should get the same result.

$y = -2x - 4 = -2(-\frac{7}{5}) - 4 = \frac{14}[5} - 4 = \frac{14}{4} - \frac{20}{5} = -\frac{6}{5}$

So the system has one solution.

3 0

2 years ago