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SVEN [57.7K]
3 years ago
14

Variables x and y are directly proportional and y=2 when x=3. What is the y when x = 9

Mathematics
1 answer:
Bingel [31]3 years ago
4 0
Y should equal 6 because you multiplied the 3 by 3 to get 9 so you have to multiply 2 by 3 to get 6
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1) Expand and simplify the following:<br>a)3(x squared plus 3x cubed - 2)​
Musya8 [376]

Answer:

3x³ + x² - 2

Step-by-step explanation:

a) 3(x squared plus 3x cubed - 2)​

x squared = x²

3x cubed = 3x³

3(x squared plus 3x cubed - 2)​

= 3(x² + 3x³ - 2)

= 3x² + 9x³ - 6

Rearrange according to power

= 9x³ + 3x² - 6

When the expression is divided by 3, it is equivalent to

3x³ + x² - 2

5 0
3 years ago
Which quantity is proportional to 12⁄4?
shutvik [7]

Answer:

3

Step-by-step explanation:

12 / 4 = 3

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3 years ago
What is the ratio of water to mixed energy drink?
dedylja [7]

Answer:

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Step-by-step explanation:

The number of water would be on the left,

The number of mixed energy drink would be on the right

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5 0
3 years ago
At a sale this week, a suit is being sold for $244.20. This is 33% of the original price. What is the original price
Alecsey [184]

Answer:

$740

Step-by-step explanation:

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4 0
3 years ago
4 people can dig a hole in 3 hours. How long does it take 9 people.
ad-work [718]

Answer: 1 hour 20 minutes

<u>Step-by-step explanation:</u>

Let's figure out how long it would take 1 person to dig the hole and then divide that number by 9 (since they are sharing the workload).

\dfrac{1}{4}x=3\qquad \implies \qquad x = 12\quad \text{It takes 12 hours for 1 person}\\\\\\\dfrac{12\ \text{(for 1 person)}}{9\ \text{(people)}}\quad =1\dfrac{1}{3}\quad =\large\boxed{1\ hour\ 20\ minutes}

6 0
3 years ago
Read 2 more answers
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