`logx=37. 288` then `x=3.92xx1 0^(37)` how ? please explain

log x=37.288 then x=2xx10^(37) how? please explain

Change 0.37 to a percent.

21 + 3.7 xx 2.9 = ?

What would be the value of x to make- 37.68 xx 37.68 + 37.68 xx x xx x + +0.32 xx 0.32 to be a perfect square?

How will you show that (31xx37xx41xx3)+(31xx37xx41xx5) is a composite number? Explain (Hint: A composite number can be factorised as the product of primes.)

(-37) xx (-7) +(-37) xx (-3) =?

x xx 15 = 37.5% " of " 220 . Find x.