Math, asked by Vrusali, 11 months ago

If 11x+13y=7.4 and 13x+1ly=7.0 then 10(x+y) is _
a. 0.6 b. 1.2 c. 6.0 d. 12.0

.

Answers

Answered by pulakmath007

TO CHOOSE THE CORRECT OPTION

If 11x + 13y =7.4 and 13x+11y = 7.0 then 10(x+y) is

a. 0.6

b. 1.2

c. 6.0

d. 12.0

EVALUATION

Here the given system of equations are

11x + 13y =7.4 - - - - - (1)

13x+11y = 7.0 - - - - - -(2)

On addition we get

24x + 24y = 14.4

⇒24( x + y ) = 14.4

⇒( x + y ) = 0.6

⇒ 10( x + y ) = 10 × 0.6

⇒ 10( x + y ) = 6.0

FINAL ANSWER

Hence the correct option is c. 6.0

━━━━━━━━━━━━━━━━

Learn more from Brainly :-

$1.$ Find a number whose 6 1/4% is 12

https://brainly.in/question/24604085

2. a number is decreased by 10% and then increased by 12% find the net increase or decrease percent

https://brainly.in/question/32968202

3. In an election between two candidates, 20 % of the voters didn't vote and 160 votes are declared invalid. The winner get...

https://brainly.in/question/11142307

Previous Question

Next Question