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3 years ago

The variables y and x have a proportional relationship, and y = 15 when x = 3.

Mathematics

2 answers:

Bingel [31]3 years ago

7 0

I don’t really know but I’m guessing two

atroni [7]3 years ago

4 0

Answer:

I think 2

Step-by-step explanation:

y=15 and x=3 5x3=15 and 2x2=4

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I need help with the #1 question. please help me

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Make a factor tree for 42

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Answer:

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Step-by-step explanation:

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The length of the rectangle is 3 times its width.

Blizzard [7]

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3 years ago

12x + 3y = 9 solve for y

Vinvika [58]

Answer:

$\Longrightarrow: \boxed{\sf{y=3-4x}}$

Step-by-step explanation:

To solve for y, you have to isolate it on one side of the equation.

<u>First, you have to subtract by 12x from both sides.</u>

$\Longrightarrow:\sf{12x+3y-12x=9-12x}$

<u>Solve.</u>

$\Longrightarrow:\sf{3y=9-12x}$

<u>Then, you divide by 3 from both sides.</u>

$\Longrightarrow:\sf{\dfrac{3y}{3}=\dfrac{9}{3}-\dfrac{12x}{3}}$

<u>Solve.</u>

$\sf{\dfrac{9}{3}-\dfrac{12x}{3}}$

$\sf{\dfrac{9-12x}{3}}$

Use the distributive property.

$\underline{\text{DISTRIBUTIVE PROPERTY:}}$

9-12x=3(3-4x)

$\sf{\dfrac{3\left(3-4x\right)}{3}}$

<u>Divide the numbers from left to right.</u>

3/3=1

3-4x

<u>Then, rewrite the problem down.</u>

$\Longrightarrow: \boxed{\sf{y=3-4x}}$

<u>Therefore, the correct answer is y=3-4x.</u>

I hope this helps! Let me know if you have any questions.

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3 years ago

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