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drek231 [11]
3 years ago
5

6x-3y=12 5x-5y=10 using substitution and elimination

Mathematics
1 answer:
Vladimir79 [104]3 years ago
4 0

Answer:

X = 0, Y = -2

Step-by-step explanation:

5(2x + 6y = -12)

2(5x - 5y = 10)

10x + 30y = -60

10x - 10y = 20  

40y = -80

y = -2

x = (10 + (-2)5) / 5

x = 0

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Anyone know how to do this?
Brums [2.3K]

Answer: \frac{10}{r+5}

The perimeter of a rectangle is given by the following formula:

P_{rectangle}=2w+2L   (1)

Where w is the width of the rectangle and L its length.

According to the image:

w=\frac{2}{r+5}   (2)

L=\frac{3}{r+5}   (3)

So, if we want to find an expression for the perimeter, we have to substitute equations (2) and (3) in (1):

P_{rectangle}=2(\frac{2}{r+5})+2(\frac{3}{r+5})   (4)

Solving and simplifying:

P_{rectangle}=\frac{10}{r+5} >>>This is the expression

Therefore, the correct answer is option B.

8 0
3 years ago
If 87 push up can be done in 3 minutes . How many can be done in 5 ?
OLga [1]

Answer:

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Step-by-step explanation:

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3 years ago
What is the slope line that goes through these two points (-5,2) and (-9,10)
Yuri [45]

Answer:

-2

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(10-2)/(-9-(-5))

m=8/(-9+5)

m=8/-4

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4 0
3 years ago
Math help algebra or algebra 2<br>1=k+14​
Maru [420]

Answer:

k=-13

Step-by-step explanation:

1=k+14

1) Subtract 14 from both sides to <u>ISOLATE</u> k:

k=-13

5 0
3 years ago
Read 2 more answers
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mash [69]

Answer:

answer C (0,-9)

Step-by-step explanation:

the line passes through (0,-9)

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