Write the numbers 10, 100, and 1000 in scientific notation with two, three, and four significant figures, respectively

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

Aconstruction worker has rope 9 m long he needs to cut it in pieces that are each 3 /5 m long how many such pieces can he cut without having any rope leftover?

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.