All categories

3 years ago

6j-k=233k+6j=11Solve j and k using the elimination method on the simultaneous equations

Mathematics

1 answer:

frez [133]3 years ago

5 0

Answer:

Step-by-step explanation:

6j - k = 23

6j + 3k = 11.....multiply by -1

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

6j - k = 23

-6j - 3k = -11 (result of multiplying by -1)

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

-4k = 12

k = -12/4

k = - 3 <=====

6j - k = 23

6j - (-3) = 23

6j + 3 = 23

6j = 23 - 3

6j = 20

j = 20/6

j = 10/3 <===

solution is : j = 10/3 and k = -3

You might be interested in

PLSS HELP

Dmitry [639]

Answer:

$8,000

Step-by-step explanation:

Let the store earned $x in December.

Therefore,

Money spent to buy new inventory $=\frac{1}{4} x$

Remaining money $= x - \frac{1}{4} x =\frac{3}{4} x$

Money used to pay bills $=\frac{1}{2} \times \frac{3}{4} x=\frac{3}{8} x$

Money still left over = $3,000

Total money earned in December $= \frac{1}{4} x+ \frac{3}{8} x+3,000$

$\therefore x= \frac{1}{4} x+ \frac{3}{8} x+3,000$

$\therefore x= \frac{2}{8} x+ \frac{3}{8} x+3,000$

$\therefore x= \frac{5}{8} x+ 3,000$

$\therefore x- \frac{5}{8} x=3,000$

$\therefore \frac{8x-5x}{8} =3,000$

$\therefore \frac{3x}{8} =3,000$

$\therefore x =3,000\times \frac {8}{3}$

$\therefore x =1,000\times 8$

$\therefore x =\$8,000$

Thus, total money earned in December is $8,000.

3 0

2 years ago

If Logan has $30.67 and Jenny has $12.69 how much more does Logan have than Jenny

e-lub [12.9K]

17,98 $ (subtraction)
Hope that helpful !

7 0

3 years ago

Read 2 more answers

1. Si Luisa come más torta que Cris, María come más torta que Cris y menos que Rosa, pero ella come más que Luisa. ¿Cuál de ella

shusha [124]

Cris come menos pastel

4 0

2 years ago

Plz need help for a grade god explanation and answer get brainliest

Ivanshal [37]

Answer:

20%

Step-by-step explanation:

There is a 20% chance you get selected for researching China because 5 out of 25 spaces are ones for researching China.

$\frac{5}{25} =\frac{20}{100}$

3 0

3 years ago

➥ The base of a parallelogram is thrice its height. If the area is 897 sq.cm. Find the base and height of the parallelogram.

IgorC [24]

Answer:

The height of parallelogram is 51.87 cm

Step-by-step explanation:

Let The height of a parallelogram = a cm

Then

The base of a parallelogram = 3a cm

So by the given condition

3a×a = 897

3a^2 = 897

a^2 = 897/3

a^2 = 299

a = 17.29

So the height of parallelogram = 3×17.29= 51.87 cm

6 0

3 years ago

6j-k=233k+6j=11Solve j and k ​using the elimination method on the simultaneous equations

6j-k=233k+6j=11Solve j and k using the elimination method on the simultaneous equations