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AleksandrR [38]
3 years ago
13

Please tell fast plzzzzzzz​

Mathematics
1 answer:
vlabodo [156]3 years ago
5 0

Answer:

\huge\boxed{\sf k = 2}

Step-by-step explanation:

Coordinate = (x,y) = (2k-1,k)

<u>This means that:</u>

x = 2k - 1 and y = k

Put it in the <u>given equation: 5x - 4y = 7</u>

5(2k-1) - 4k = 7

10k - 5 - 4k = 7

6k - 5 = 7

Adding 5 to both sides

6k = 7+5

6k = 12

Divide both sides by 6

k = 2

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>
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Which is not an equation of the line going through (6, 7) and (2, –1)?
garri49 [273]
Answer - D.

you basically find the equation of the line first and eliminate the wrong answers...

Strategy:  before u do any of this, label your coordinates as (X1,Y1) and (X2,Y2) and u can choose any of ur points to be as x1 or x2 or y1 or y1...
basically, I'll choose (6,7) as (x1,y1) and (2,-1) as (x2,y2). SO,

First you have to  find the gradient (m) of the line.
  you do this by using the formula m = Y2-Y1 / X2-X1 (where '/' is division sign) ....
Put the numbers in their respective places and your gradient will be 2x. we put the x after our number to represent it as a gradient as the straight line formula is y = mx+c and you've found the m.
NOW.
use the formula Y-Y1=m(x-x1) to find the equation of the line.Again u can use any Y1 and X1 here but remember your m is 2

replace the digits and solve...Hopefully you'll get sth like this if you use the points (6,7):
Y-7 = 2(x-6) ....
y=2x-12+7...
Y=2x-5! <<<< this is your straight line equation!
Now all u gotta do is rearrange all your options into y = mx+c.
D. is incorrect as it gives us y=2x+5 and not y = 2x-5 unlike the others 
 

Hope you get it!




7 0
2 years ago
What’s the average for1/2,1/3 and1/6
Ugo [173]
1/2+1/3+1/6=3/6+2/6+1/6=6/6=1
By putting them all at the same denominator, you can add them all together.
then you have to divide it by 3 for the three.
1/3 is the average.
3 0
3 years ago
W<br>3:<br><img src="https://tex.z-dn.net/?f=2x%28x%20-%203%29%20%3D%200%20" id="TexFormula1" title="2x(x - 3) = 0 " alt="2x(x -
katrin [286]

Answer:

x = 3, x = 0

Step-by-step explanation:

To solve these factored equations, just divide each part by zero and solve.

2x(x-3) = 0 → (x-3) = 0, and 2x = 0.

(x-3) = 0 → x - 3 + 3 = 0 + 3 → <u>x = 3.</u>

2x = 0 → 2x/2 = 0/2 → <u>x = 0.</u>

5 0
3 years ago
Write the equation of the line graphed below in slope-intercept form.
Liula [17]

Answer:

C

Step-by-step explanation:

c. y = 2x + 3

first you need to find the y-intercept which is 3

and then the slope rise/run which is 2 so y = 2x + 3

6 0
2 years ago
5 more than the quotient of a number and 4
DIA [1.3K]
To me it sounds like 4 divided by n +5
8 0
3 years ago
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