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

21 + 3.7 xx 2.9 = ?

67 ^(2) - 37 ^(2) = ( 67 -37) xx "________" = "_________."

Find 2/5 xx (-3)/7 - 1/14 - 37 xx 3/5

Verify : (-50)xx[37+(-7)]=(-50)xx37+(-50)xx(-7) .

Find (2)/(5)xx(-3)/(7)-(1)/(14)-37xx(3)/(5)

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?

Radium has atomic weight 226 and half life of 1600 years. The number of disintegrationsd produced per second from one gram is a. 4.8 xx 10^(10) b. 3.7 xx 10^(20) c. 9.2 xx 10^(6) d. 3.7 xx 10^(8)