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muminat
3 years ago
9

Given that 9 x − 4 y = 20 Find y when x = − 2 Give your answer as an improper fraction in its simplest form

Mathematics
1 answer:
never [62]3 years ago
6 0

Answer:

\boxed{\df\ \dfrac{-19}{2}}

Step-by-step explanation:

Hi,

x=-2

it gives

9*(-2)-4y=20

<=> -18-4y=20

<=> 18-18-4y=20+18=38

<=> -4y=38

<=> y = -38/4=-19/2

hope this helps

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Simora [160]
First off, you can use your calculator.

7 / 20 = 7 divided by 20

You can multiply both top and bottom by 5.

This is to make the bottom 100.

(7*5) / (20*5)

35 / 100

0.35

7/20 = 0.35
6 0
3 years ago
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stepladder [879]

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Step-by-step explanation:

5 0
3 years ago
Segment AB has endpoints at −2 and 12. What is the coordinate of its midpoint?
charle [14.2K]

Hi there!

\large\boxed{5}

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3 0
3 years ago
The global surface water area is 361, 132,000 square metres. Calculate the volume of water needed to cause a 3mm in sea level.
vovangra [49]

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3 0
3 years ago
Enrollment at ELAC decreased by 5%, or 600 people, the year. How many people were enrolled last year?
babymother [125]

Answer:

12,000.

Step-by-step explanation:

Let x be the number of people that were enrolled last year.

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Therefore, 12,000 people were enrolled last year.

7 0
3 years ago
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