Given two equations are :
- 2x = - y + 6.
- -4 x + 3y = 8 .
We may write them as ,
- 2x + y - 6 = 0 .................(i)
- 4x - 3y + 8 = 0 ...............(ii)
Multiplying equⁿ (i) by 2 :
⇒ 2(2x + y - 6 ) = 0.
⇒ 4x + 2y - 12 = 0 .....................(iii) .
<u>Subtra</u><u>ct</u><u> </u><u>equ</u><u>ⁿ</u><u> </u><u>(</u><u>ii</u><u>)</u><u> </u><u>from</u><u> </u><u>equⁿ</u><u> </u><u>(</u><u>iii</u><u>)</u><u> </u><u>:</u><u>-</u>
⇒ 4x + 2y - 12 = 0
ㅤ- 4x + 3y - 8 = 0 [ Sign changes ]
__________________
⇒ 5y - 20 = 0.ㅤㅤㅤㅤㅤ
⇒ 5y = 20.
⇒ y = 20/5.
⇒ y = 4
Put this value in (i) to obtain x .
⇒ 2x + y - 6 = 0.
⇒ 2x +4 - 6 = 0.
⇒ 2x - 2 = 0.
⇒2x = 2 .
⇒ x = 2/2.
⇒ x = 1 .
<u>Hence</u><u> </u><u>the</u><u> </u><u>value</u><u> of</u><u> x</u><u> is</u><u> </u><u>1</u><u> </u><u>&</u><u> </u><u>y</u><u> </u><u>is</u><u> </u><u>4</u><u>.</u>
Answer:
3.05
Step-by-step explanation:
15.25 divided by 5=
3.05
Answer:
30% discount
Step-by-step explanation:
Given that,
the sale price of sofa larry and dona bought = 1,344
the original price of sofa before discount = 1,920
<h2>Discount rate Calculation</h2><h3>Discount = Marked Price - Selling Price</h3>
Discount = 1920 - 1344
Discount = 576
<h3>Discount percentage = Discount/Marked Price × 100%</h3>
Discount percentage = 576 / 1920 × 100%
Discount percentage = 3/10 × 100%
Discount percentage = 30%
So, the discount rate on sofa which larry and dona bought is 30%
Answer:
x = 2
Step-by-step explanation:
Given a line parallel to a side of a triangle and intersecting the other 2 sides then it divides those sides proportionally, that is
= ( cross- multiply )
6x = 4(x + 1)
6x = 4x + 4 ( subtract 4x from both sides )
2x = 4 ( divide both sides by 2 )
x = 2
Answer:
306
Step-by-step explanation:
I think you just multiply 18 x 17=306