Question

pls tell step by step​

Answer 1

Step-by-step explanation:

1..5.1×10^8

2... 2^9=2^15

2^15-9

2^6

Answer 2

$(a) \: 510000000 in \: standard \: form \\ = 5.1 \times {10}^{8} \\ (b) \: let \: the \: value \: for \: blank \: be \: x \\ {2}^{7} \times {2}^{x} = {2}^{15} \\ {2}^{7 + x} = {2}^{15} \\ 7 + x = 15 \\ x = 15 - 7 \\ x = 8 \\ in \: the \: blank \: there \: will \: be \: 8.$