Question

please please please solve it​

Answer 1

Answer:

28. factorization of 512 is equal to 8 × 8 × 8.

there are three times of 8 so 8 is the cube perfect of 513.

29.

$\frac{(3x + 5}{2x + 1} = \frac{1}{3}$

$9x + 15 = 2x + 1$

$9x - 2x = 1 - 15$

$7x = - 14$

$x = - 2$

30.put the formula of loss % u can find that