Question

Please help

Answer 1

Answer:

Step-by-step explanation:

1 × a = a

a² = a*a ; a³ = a*a*a .....

$(\frac{a}{b}) ^{n} = \frac{a^{n} }{b^{n} }$

(1).

(a). $7^{5}$

(b). $(\frac{1}{7}) ^{6}$ = $\frac{1}{7^{6} }$

(c). $(9.3)^{9}$

(2).

(e). $(\frac{1}{2} )^{4} =\frac{1}{2^{4} }$ = $\frac{1}{2*2*2*2}$ = $\frac{1}{16}$

(f). $(\frac{1}{3} )^{2}$ = $\frac{1}{3}$ × $\frac{1}{3}$ = $\frac{1}{9}$

(3).

x² = 30² + 16² = 900 + 256 = 1156 = 34² ⇒ x = 34 units