Question

Find the value of m, If the two lines

3mx - 2my - 10 = 0 and

(5m + 2)x - 4my - 28 = 0 are parallel.

a) m=3
b) m=2
c) m=4
d) m=7​

Answer 1

Answer:

b) m=2

refer the attachment for solution.Hope it'll help you

Answer 2

Answer:

The equation formed is $\sf{\dfrac{(y + 8)}{2} = 10}$ and the number is 12.

Step-by-step explanation:

Let the number be y.

The equation formed will be :

$\sf{\rightarrow} \: \dfrac{(y + 8)}{2} = 10$

This is the equation formed.

Solving for the value of the number.

$\sf{\rightarrow} \: (y + 8)= 10 \times 2$

$\sf{\rightarrow} \: (y + 8)= 20$

$\sf{\rightarrow} \: y= 20 - 8$

$\sf{\rightarrow} \: y = 12$

The number is 12.

Verification:

Adding 8 to 12 -

$\sf{\rightarrow} \: 12 + 8 = 20$

Dividing it by 2 -

$\sf{\rightarrow} \: \dfrac{20}{2} = 10$

LHS = 10

RHS = 10

LHS = RHS

Therefore, the number is 12.

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