Math, asked by nafizandakildeathlyr, 9 months ago

solve this question please .i will mark you brainliast.​

Attachments:

Answers

Answered by muggusaini
1

Answer:

here u go please mark me as brainliest

Attachments:
Answered by AlluringNightingale
0

4). Solution:

We have ;

=> 2(a - 5) = 18

=> a - 5 = 18/2

=> a - 5 = 9

=> a = 9 + 5

=> a = 14

Hence,

The required value of a is 14 .

°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°

5). Solution:

We have ;

=> 0.4 = y/25 + y

=> 0.4 = (y + 25y)/25

=> 0.4 = 26y/25

=> 26y/25 = 0.4

=> y = 0.4×25/26

=> y = 10/26

=> y = 5/13

Hence,

The required value of y is 5/13 .

°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°

6). Solution:

We have ;

(3x + 4)/(2x + 4) = 4/3

On cross-multiplication , we have ;

=> 3(3x + 4) = 4(2x + 4)

=> 9x + 12 = 8x + 16

=> 9x - 8x = 16 - 12

=> x = 4

Hence,

The required value of x is 4 .

Verification:

=> LHS = (3x + 4)/(2x + 4)

=> LHS = (3•4 + 4)/(2•4 + 4)

=> LHS = (12 + 4)/(8 + 4)

=> LHS = 16/12

=> LHS = 4/3

=> LHS = RHS

Hence verified .

°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°

7). Solution:

We have ;

(9x + 5)/2x = 15/2

On cross-multiplication , we have ;

=> 2(9x + 5) = 15•2x

=> 18x + 10 = 30x

=> 18x - 30x = -10

=> - 12x = -10

=> x = -10/-12

=> x = 5/6

Hence,

The required value of x is 5/6 .

Verification:

=> LHS = (9x + 5)/2x

=> LHS = (9•5/6 + 5)/(2•5/6)

=> LHS = (15/2 + 5)/(5/3)

=> LHS = [ (15 + 10)/2 ] / (5/3)

=> LHS = (25/2)/(5/3)

=> LHS = (25/2)×(3/5)

=> LHS = (25×3)/(2×5)

=> LHS = 5×3/2

=> LHS = 15/2

=> LHS = RHS

Hence verified .

Similar questions