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FrozenT [24]
3 years ago
11

Is 12/30 and 18/45 proportional, or not proportional?

Mathematics
2 answers:
34kurt3 years ago
5 0

12/30 = 18/45, so first you're going to cross multiply and you'll get (30)(18) = (12)(45). Then you can see that 540 = 540 same number so they're proportional...

BTW THIS WAY IS A LOT EASIER.

12/30 = 2/5

18/45 = 2/5

So yes, in summary, they're proportional to each other. Hope this helps, have a BLESSED and wonderful day! :-)

Lostsunrise [7]3 years ago
4 0

Answer:

proportional

Step-by-step explanation:

12/30 multiplied by a factor of 1.5 is 18/45 so it is proportional

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How would you solve for x and y and what are x and y? Not sure what to do.
Ivahew [28]

Answer:

x = 26 2/3

y = 50

Step-by-step explanation:

you could set '2y-3x' equal to '-3x+y+50' because they are vertical angles

2y - 3x = -3x + y + 50

add 3x to each side to get:

2y = y + 50

y = 50

also, we know that (1/2y + 25) + (2y - 3x) = 180 because they form a straight line

3/2y + 25 - 3x = 180

subtract 25 from each side to get:

3/2y - 3x = 155

substitute 50 for 'y' to get:

3/2(50) - 3x = 155

75 - 3x = 155

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4 0
3 years ago
Find the area of this parallelogram.<br> 8.7 cm<br> 10.1 cm<br> 16.9 cm
Tpy6a [65]

Answer:

A=147.03\text{ cm}^2

Step-by-step explanation:

The area for a parallelogram is given by the formula:

A=bh

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The base length is 16.9 while the vertical height is 8.7. Thus:

A=(16.9)(8.7)

Multiply using a calculator:

A=147.03\text{ cm}^2

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3 years ago
Read 2 more answers
Solve the following equation simultaneously 2a-3b+10=0, 10a+6b=8​
tia_tia [17]

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Gemiola [76]
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5x-8=2x+7
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7 0
3 years ago
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