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2 years ago

-1/3x-4/3y=-2 1/3x-2/3y=4 using elimination

Mathematics

1 answer:

Minchanka [31]2 years ago

5 0

-1/3x-4/3y=2

1/3x-2/3y=4

First realize that the coefficient of x is -1/3 and 1/3 which can be eliminated with addition

Adding the two equations together gets

-6/3y=6

Simplify

-2y=6

y=-3

Substitute back into original equation

1/3x-2/3(-3)=4

1/3x+2=4

1/3x=2

x=6

Answer

x=6, y=-3

Check answer

-1/3(6)-4/3(-3) =?= 2

-2+4=2

2=2

Done!

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Form

VARVARA [1.3K]

Answer:

a. Y=-2x+4

Step-by-step explanation:

6x+3y-9=3

+9 +9

6x+3y=12

-6x -6x

3y=-6x+12

/3 /3 /3

y=-2x+4

5 0

3 years ago

Plz help me answer this

OLEGan [10]

The correct answer is A. $d* log_ba$

Step-by-step explanation:

According to the power rule for logarithms, the logarithm of a power can be simplified by writing it as the product of the exponent multiplied by the logarithm of the base.

For example;

$log_b(M^n)=nlog_bM$

Hence in this case,

$log_ba^d=d*log_ba$

Learn More

Logarithms : brainly.com/question/11535704

Keyword : log

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4 0

2 years ago

I need an explanation on how to work this out

rjkz [21]

Answer:

make 360×each number given/15 students to start drawing

360×7/15=168°

360×5/15=120°

360×2/15=48°

360×1/15=24°

now draw each one from the radius give to the clockwise

if you don't know what's clockwise direction, see it from your house or tell anybody in your home to tell you where is clockwise

after you finish drawing, label each section by writing the names on the correct sections ( you can write in or out of the circle)

6 0

3 years ago

(2x+2y=10)+(-x+y=1)

ruslelena [56]

$\bf \begin{cases}
2x+2y=10\\
-x+y=1
\end{cases}\\\\
-------------------------------\\\\
-x+y=1\implies y=1+x\impliedby \textit{let's plug that in the first equation}
\\\\\\
2x+2(\stackrel{y}{1+x})=10\implies 2x+2+2x=10\implies 4x=8
\\\\\\
x=\cfrac{8}{4}\implies \boxed{x=2}\impliedby \textit{let's plug that in the second one}
\\\\\\
-(\stackrel{x}{2})+y=1\implies \boxed{y=3}$

7 0

3 years ago

Find the number of paths from A to B. (Each step can only go up or to the right.)

mash [69]

Answer:

Total ways possible = 104 ways

Step-by-step explanation:

Total ways possible = 104 ways

The figure is attached here for understanding.

In the figure, the blank points are those points where we can not reach.

6 0

2 years ago