3 years ago

What is the explicit formula for this situation?

Mathematics

1 answer:

emmasim [6.3K]3 years ago

3 0

Answer:

Step-by-step explanation:

i did it with eliminating choices

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Find y Solve the simultaneous equations 3x + 2y = 27 3x - Y = 9

lutik1710 [3]

Answer:

$y = 6$

Step-by-step explanation:

To find $y$ , we need to eliminate $x$ in this system of equations:

$3\cdot x + 2\cdot y = 27$ (1)

$3\cdot x - y = 9$ (2)

From (1) and (2):

$x = \frac{27-2\cdot y}{3}$

$x = \frac{9+y}{3}$

Then, we equalize both expressions and solve for $y$ :

$\frac{27-2\cdot y}{3} = \frac{9+y}{3}$

$27-2\cdot y = 9 + y$

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3 years ago

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Answer:

Step-by-step explanation:

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3 years ago

Solve each equation for y 2x+y=5 2x-y+=5 x+2y=5

frosja888 [35]

Answer:

1. y=5-2x

2. -y=5-2x

3. $\frac{5 - x}{2}$

Step-by-step explanation:

1. 2x+y=5

y=5-2x

2. 2x-y=5

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3. x+2y=5

2y=5-x

$\frac{5 - x}{2}$

<h2>please mark me brainliest</h2>

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2 years ago

a red lamp flashes every 10 seconds ,a yellow lamp flashes every 24 seconds and a blue lamp flashes every 30 seconds.How many ti

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Step-by-step explanation:

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Valentin [98]

Answer:

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Step-by-step explanation:

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