Question

6) For equations 5x + 3y + 11 = 0 and 2x + 4y = - 10 find D.
A) 14
B) - 14
C) 26
D)- 26​

Answer 1

Answer:

Question

✳️For equations 5x + 3y + 11 = 0 and 2x + 4y = - 10 find D.

A) 14

B) - 14

C) 26

D)- 26

Solution ⬆️

refer to the attachment

➡️ans is A)14

Step-by-step explanation:

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Answer 2

The value of D = 14

Given :

The equations 5x + 3y + 11 = 0 and 2x + 4y = - 10

To find :

The value of D is

A) 14

B) - 14

C) 26

D) - 26

Solution :

Step 1 of 2 :

Write down the given equations

Here the given system of equations are

5x + 3y + 11 = 0

2x + 4y = - 10

Step 2 of 2 :

Find the value of D

Using Cramer's rule

$\displaystyle \sf D = \begin{vmatrix} 5 & 3 \\ \\ 2 & 4 \end{vmatrix}$

$\displaystyle \sf{ \implies }D = (5 \times 4) - (2 \times 3)$

$\displaystyle \sf{ \implies }D = 20 - 6$

$\displaystyle \sf{ \implies }D = 14$

The value of D = 14

Hence the correct option is A) 14