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eduard
2 years ago
7

What is the solution of each system of equations? Show your work-6x-5y=64x+y=3

Mathematics
2 answers:
Marina CMI [18]2 years ago
8 0

Answer:

x=\frac{9}{157} \\y=-\frac{105}{157}

Step-by-step explanation:

-6x-5y=64x+y=3

-6x-5y=64x+y

-6x-64x=y+5y

-70x=6y

divide by 2

-35x=3y

y=-(35/3)x

y+64x=3

-(35/3)x+64x=3

-35x+192x=9

157x=9

x=9/157

y=-35/3x

y=-\frac{35}{3} \times\frac{9}{157} \\y=-\frac{105}{157}

elena55 [62]2 years ago
6 0

Answer:

-6y = 70x = 3

Step-by-step explanation:

-6x - 5y= 64x+ y=3

 ---------------------------  

       -y            - y

---------------------------------

-6x -6y = 64x = 3

------------------------------------

+6x        +6x

-------------------------------------

-6y = 70x = 3

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Alex
18 - (8 - 3 • (2t + 5)) = 0



6t + 25 = 0



3.1 Solve : 6t+25 = 0

Subtract 25 from both sides of the equation :
6t = -25
Divide both sides of the equation by 6:
t = -25/6 = -4.167

Final answer is

t = -25/6 = -4.167
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3 years ago
HELP ASAP PLZ will give u brainliest if u answer it first find the length of df
mr Goodwill [35]

Answer:

3.75

Step-by-step explanation:

DF = 6/24 × 15 = 3.75

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6 0
2 years ago
Explain why their are no solutions to the system of inequalities <br> y ≤2x-5 <br> y ≥2x+1
rosijanka [135]

Answer:

Sorry this is late and I think this is right.

They are both parallel, they have the same slope, and do <em>not </em>intersect. If you were to draw a slope out for it, you would find this to be true.

For example: Say the question called for you to explain why there aren't any solutions to these system of inequalities:

<em>y < - 1/2x -3</em>

<em>y > 1/2x + 2</em>

<em>y= -x/2 -3</em> and <em>y= -x/2 + 2 </em>have the same exact slope, are parallel, and never intersect. The first line is 5 units below the second line when x = 0. Because the lines are parallel, it is always below the second line. The solutions of y < - x/2 -3 are the points in the plane below the first line. The solutions of y > 1/2 + 2 are points above the second line.

I hope this helps you. Good luck on whatever you're working on and stay safe! Please let me know if this helped you or didn't.

7 0
3 years ago
I NEED HELPP PLZ Which equation best represents the relationship shown in this graph?
Dafna11 [192]

Answer:

y = 2x

the formula for linear equations are y = mx+c,

where m is the gradient,

and c is the y-intercept

to find m (the gradient):

1. pick to points on the graph (eg. -2,-4 and 2,4)

2 substitute the values into the formula for gradient y2-y1/x2-x1.

m = y2-y1/x1-x2

= -4 -4/-2-2

= -8/-4

= 2

to find c (y-intercept):

- the y-intercept is where the graph cuts the y axis

- in this graph, the y-intercept is 0

hence,

c = 0

substitute m = 2 and c = 0 to y = mx+c,

y = 2x + 0

y = 2x

hence, the equation that best represents the relationship shown in the graph is y = 2x.

8 0
2 years ago
Sarah used 2.5 cups of cheese in a dish that serves 10 people. Amyn used 1.6 cups of cheese in a dish that serves 8. How much mo
Dominik [7]

0.5 cups of cheese

Amy: 1.6 divided by 8 = 0.2 cups of cheese per serving

Sarah: 2.5 divided by 10 = 0.25 cups of cheese per serving

0.25 - 0.2 = 0.5
4 0
2 years ago
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