Question

plz solve this problem plzzz ​

Answer 1

Answer:

1. x = 2

2. $\frac{3125}{7776}$

3. 5; 65

4. 3.25

5. 9991

Step-by-step explanation:

1.

$(\frac{3}{4} )^{-3} (\frac{3}{4} )^{4x} = (\frac{3}{4} )^{5}\\\\(\frac{3}{4} )^{4x-3} = (\frac{3}{4} )^{5}\\\\4x-3 = 5\\\\x =2$

2.

$(\frac{5}{6} )^{-3} ((\frac{5}{6})^{-2} )^{-4} \\\\= (\frac{5}{6} )^{-3} (\frac{5}{6})^{8} \\\\= (\frac{5}{6} )^{-3+8}\\\\= (\frac{5}{6} )^{5} \\\\= \frac{3125}{7776}$

3.

65² = 4225

∴ Least number to be substracted from 4230 = 5

Square root = 65

4.

$\sqrt[3]{27} + \sqrt[3]{0.008} + \sqrt[3]{0.000125} \\\\= 3 + 0.2 + 0.05\\\\= 3.25$

5.

97 x 103

= (100-3)(100+3)

= 100² - 3²

= 9991