solve: `1 + 6 + 11 + 16 +.........+ x = 148`

Solve: 7x-5=16

Solve: 1/4 x + 1/6 x = x-7 .

Solve for x : 6x^(2) + 11x + 3 = 0

If 1-5 , 6 -10 , 11-15 , 16-20, ..., are the classes of a frequency distribution , then the lower boundary of the class 11-15 is "_______" .

1, 2, 4, 8, 16, 32, 64, (.....), 256 (a) 148 (b) 128 (c) 154 (d) 164

Solve for x and y 10 x + 3y = 75, 6x - 5y = 11

Solve for x : x^6-1 =0.

solve 16x^(2)+17x+5