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valentinak56 [21]
3 years ago
5

How to solve 4x-y=3 3x+y=4 using subsitution

Mathematics
1 answer:
Ivan3 years ago
6 0

The answer for X is 3 and the answer for Y is 9

Step-by-step explanation:

So, if you plug in 3 for x you would have to multiply 3×4, which is 12 then if you replace y for a 9 ,well you have to subtract 12-9 and get 3.

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Find the value of n so that the line perpendicular to y = (-1/3)X-4 passes through the points (n. 6) and (4,15).
iogann1982 [59]

Answer:

1

Step-by-step explanation:

The slope of the perpendicular is the negative inverse of the slope of the line.

m = -1 / (-⅓)

m = 3

The slope between the two points is 3, so:

3 = (15 − 6) / (4 − n)

3 (4 − n) = 9

4 − n = 3

n = 1

7 0
3 years ago
. Emma wanted to make an origami fish for each of her 22 classmates. She takes 30 minutes to make one fish. How long will Emma t
zzz [600]

Answer:

11 hours

Step-by-step explanation:

50 minutes = 1 hour

30 minutes = 1/2 hour

She takes 1/2 per fish.

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Answer: 11 hours

3 0
3 years ago
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On Saturday, 45% of the music Brianna listened to was country songs. She listened
Dmitriy789 [7]

Hey there!

When dealing with percents, whenever you see the were is or was, it is an equal sign. Here, we see that 45% of the music she listened to was country, and 27 songs were country.

0.45x=27

Now, we solve.

x=60

Therefore, Brianna listened to 60 songs.

I hope this helps!

7 0
3 years ago
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-5x-y=12<br> 3x-5y=4<br> Linear systems by substitution
alukav5142 [94]
You would do 3 times 5 mines 5 which equals 10 and the you would do 5x12 

4 0
3 years ago
Only 10 minutes
Nady [450]

Answer:

If the triangle is reflected the new coordinate will be

R'(-3, 2), S'(-5, -2), T'(-6, 0)

6 0
3 years ago
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