Question

Can someone please
Help me on these

Answer 1

34. (c) 12

35. (a) -12

36. (a) 51

37. (a) 13

Explanation:

34.)

`\implies \: \sf(4)/(xx + 2) = (6)/(2xx - 3) \\ \\ \implies \: \sf4(2xx - 3) = 6(xx + 2) \\ \\ \implies \: \sf 8xx - 12 = 6xx + 12 \\ \\ \implies \: \sf 8xx - 6xx = 12 + 12 \sf \\ \\ \implies \: \sf 2xx = 24 \\ \\ \implies \: \sf xx = (24)/(2) \\ \\ \implies \: \sf xx = 12 \\`

Hence, Required answer is option (c) 12.

35.)

`\implies \: \sf (xx - 2)/(2) = (3xx + 8)/(4) \\ \\ \implies \: \sf2(3xx + 8) = 4(xx - 2) \\ \\ \sf 6xx + 16 = 4xx - 8 \\ \\ \implies \: \sf 6xx - 4xx = - 8 - 16 \\ \\ \implies \: \sf 2xx = - 24 \\ \\ \implies \: \sf xx = ( - 24)/(2) \\ \\ \implies \: \sf xx = - 12 \\`

Hence, Required answer is option (a) -12.

36.)

`\implies \: \sf√(xx - 2) = 7 \\ \\ \implies \: \sf xx - 2 = {(7)}^(2) \\ \\ \implies \: \sf xx - 2 = 49 \\ \\ \implies \: \sf xx = 49 + 2 \\ \\ \implies \: \sf xx = 51`

Hence, Required answer is option (a) 51.

37.)

`\implies \: \sf √(2xx - 10) = 4 \\ \\ \implies \: \sf 2xx - 10 = {(4)}^(2) \\ \\ \implies \: \sf 2xx - 10 = 16 \\ \\ \implies \: \sf 2xx = 16 + 10 \\ \\ \implies \: \sf 2xx = 26 \\ \\ \implies \: \sf xx = (26)/(2) \\ \\ \implies \: \sf xx = 13 \\`

Hence, Required answer is option (a) 13.