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3 years ago

Solve 7x+y=50 4x+y=23 simultaneously

Mathematics

2 answers:

Aloiza [94]3 years ago

6 0

so the value of x is 9 and y is -13.

Hope this will help u...

Cloud [144]3 years ago

4 0

Answer:

x = 9 and y = -13

Step-by-step explanation:

7x + y =50.... eq 1

4x + y =23....eq 2

Subtract eq 2 from eq 1

7x + y = 50

4x + y = 23

This becomes;

7x - 4x + y - y= 50 -23

3x = 27

Divide both sides by the coefficient of x; 3

x = 9

Slot in the value of x in eq 1

7 (9) + y = 50

63 + y = 50

Subtract 63 from both sides

63 - 63 + y = 50 - 63

y = -13

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Answer:

- 5

Step-by-step explanation:

Note that - (- 12) = + 12

Thus

- 17 - (- 12) = - 17 + 12 = - 5

It looks like Tom subtracted 12 from - 17, that is - 17 - 12 = - 29

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3 years ago

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vichka [17]

Answer:

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Step-by-step explanation:

The 2-point form of the equation of a line can be used to write the equation of the line through the given points.

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3 years ago

Find the indicated limit, if it exists. limit of f of x as x approaches 0 where f of x equals 5x minus 8 when x is less than 0 a

vlabodo [156]

The limit does not exist. Why? Because the left hand limit DOES NOT equal the right hand limit. Let’s double check:

We could use -0.000001 to represent the left hand limit. This is less than 0. We plug in 5x - 8

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That is our left hand limit.

Our right hand limit will be represented by 0.000001. This is greater than 0. We plug in abs(-4 - x)

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3 years ago

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Answer:

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Step-by-step explanation:

Given

The attached graph

Required

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$(x_2,y_2) = (0,-1)$

Next, calculate the slope (m)

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3 years ago

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