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poizon [28]
3 years ago
10

What is the solution of the system? 5x-y=-7 3x-y=-2

Mathematics
2 answers:
bixtya [17]3 years ago
8 0

Answer: x=-5/2 ; y=11/2

Step-by-step explanation:

Hi, to answer this question we have to solve the system of equations:

5x-y =-7(a)

3x-y=-2(b)

Solving for "y" in (a)

5x+7=y

Replacing "y" in (b)

3x-(5x+7) =-2

3x-5x-7=-2

-7+2=-3x+5x

-5=2x

x= -5/2=-2.5 (decimal form)

Replacing "x" in (a)

5(-2.5) -y=-7

-12.5-y=-7

-12.5+7=y

-5.5=y

y=-5.5= -11/2

Feel free to ask for more if needed or if you did not understand something.

sergij07 [2.7K]3 years ago
7 0

1) x = 1/5y + -7/5

2) x = 1/3y + -2/3

The answers are in fractions

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allochka39001 [22]

Answer:

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Step-by-step explanation:

The equation of a line in slope- intercept form is

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Here m = \frac{3}{5} and c = 8, thus

y = \frac{3}{5} x + 8 ← equation of line

8 0
3 years ago
What is the measure of angle CAD?
LiRa [457]

Answer:

CAD = 128

Step-by-step explanation:

CAD + CAB = DAB

We know that DAB is a straight line, so it equals 180 degrees

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CAD +52-52 = 180-52

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3 years ago
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sasho [114]

Answer:

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Step-by-step explanation:

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Hope this helps

4 0
3 years ago
The math club sells candy bars and drinks during football games.60 candy bars and 110 drinks will sell for $265120 candy bars an
harina [27]
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Hope this helps!   :)
5 0
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coldgirl [10]

Answer:

See explanation

Step-by-step explanation:

One vertex is at point (2,3).

Go 1 unit to the left and 5 units up, then the second vertex will be at the point (1,8).

Go 5 units to the right and 1 unit up, then the third vertex will be at point (6,9).

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Since you always move one unit in one direction and 5 units in another direction, obtained quadrilateral will be a square.

See attached diagram for details.

3 0
3 years ago
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