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Gelneren [198K]
3 years ago
8

Solve the simultaneous equations by substitution 5x+6y=−11 5x=2y−3

Mathematics
2 answers:
shusha [124]3 years ago
7 0

Answer:

y= -1, x= -1

5x+6y=-11

<u>-(5x-2y=-3)</u>

     8y=-8

      y=-8/8

      y= -1

5x+6(-1)=-11

5x-6     = -11

        5x=-11+6

        5x=-5

          x=-5/5

          x=-1

kicyunya [14]3 years ago
3 0

Answer:

Step-by-step explanation:

we have

5x+6y= -11

5x-2y=-3

we will multiply first equation with -1

-5x-6y=11  and add it with the second

5x-2y=-3

-8y=8

y=-1

we go to our original equation and replace y=-1

5x-6=-11

5x=-11+6

5x=-5

x=-1

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5 0
3 years ago
Please help me find the x...
anzhelika [568]

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Step-by-step explanation:

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8 0
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4 0
3 years ago
A parking lot has seventy-eight parking spaces numbered from 1 to 78. There are no cars in the parking lot when Jillian pulls in
polet [3.4K]

Answer:

49/78

Step-by-step explanation:

Probability calculates the likelihood of an event occurring. The likelihood of the event occurring lies between 0 and 1. It is zero if the event does not occur and 1 if the event occurs.

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A student desk has an area of 15/16 square meters. The width of the desk is 5/4 meters. What is the length of the desk in meters
olga_2 [115]
For this case, the first thing we are going to do is model the desk as a rectangle.
 The area of the rectangle is given by:
 A = w * l
 Where,
 w: width
 l: length
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 Substituting values:
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 Rewriting we have:
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 Answer:
 
The length of the desk in meters is:
 
l = (3/4) m
7 0
3 years ago
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