Question

I need help .Can you do Questions 1,2,3,4,5,6 and 7 Please?

Answer 1

1-

a. 16 b. 81 c.5 d.8





2-

a. 3

b. 30





3-


a. 50.7. b. 729 c. 6.7 d. 7.7







4-


a. 289


b. 2197





5.


a.
${5}^{2} \times {2}^{2} = 10 {}^{2}$


b.
$0.3 \times {10}^{3} = 300$





6-


a.
$4 {}^{2} \times {2}^{3} - \sqrt{25} = ( {2}^{2}) {}^{2} \times {2}^{3} - 5 \\ = {2}^{4} \times {2}^{3} - 5 = {2}^{7} - 5$



b.
$\sqrt{100 } \times \sqrt[3]{64} = 10 \times 4 = 40$




c.
$3( {7}^{2} - \sqrt{81}) = 3( {7}^{2} - 9) \\ = 3(49 - 9) = 3 \times 40 = 120$






7.
${2}^{3} \times {3}^{2}$







good luck