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babunello [35]
3 years ago
8

Y=1x+2 y=3x-4 use substtiution

Mathematics
2 answers:
postnew [5]3 years ago
7 0

Answer:

3Y - 4X - 4

Step-by-step explanation:

Brums [2.3K]3 years ago
3 0
The answer is X=2 and Y=-4

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Ber [7]

Answer:Dang i dont know.

Step-by-step explanation:

4 0
3 years ago
After painting the fence steve and janet realize that their house also needs painting. But steve will have to do the painting hi
gladu [14]

Answer:

Therefore, Steve will paint house for 20.6 days.

Step-by-step explanation:

We know that Steve determines that it would take them 9 days to paint the house together (if they were both healthy) and that it would take Janet (when healthy) 16 days to paint the house alone.

We conclude that in 1 day Janet painted 1/16 of the house. In nine days, Janet painted 9/16 of house.

So, 7/16 of house paint Steve in nine days.

We have the following proportion:

\frac{7}{16}:9=1:x\\\\\frac{7}{16}x=9\\\\x=9\cdot \frac{16}{7}\\\\x=20.6

Therefore, Steve will paint house for 20.6 days.

4 0
3 years ago
in a recent year the population of califorina was about 2.52x10^7 people its land area is about 4.05x10^5 km^2 what was the aver
Oduvanchick [21]
 4.05x10^5 km^<span>2 is the answer to your question.

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8 0
3 years ago
<img src="https://tex.z-dn.net/?f=3x%20-%202y%20%3D%2043x%20%2B%202y%20%3D%208" id="TexFormula1" title="3x - 2y = 43x + 2y = 8"
den301095 [7]

3x - 2y = 8 +

===》 46x = 16

43x + 2y = 8

x = 16/46

x = 8/23

______________________________

3x - 2y = 8

3(8/23) - 2y = 8

24/23 - 2y = 8

2y = 24/23 - 8

y = 12/23 - 4

y = 12/23 - 92/23

y = - 80/23

5 0
2 years ago
The value of y is directly proportional to the value of x. If y = 35 when x = 140, what is the value of y when x = 70?
antiseptic1488 [7]

Answer:

y = 17.5

Step-by-step explanation:

Use the direct proportion equation, y = kx

Plug in the x and y values to solve for k

y = kx

35 = k(140)

0.25 = k

Then, plug in the k value and given x value into the equation, and solve for y

y = kx

y = 0.25(70)

y = 17.5

5 0
3 years ago
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