1) How many different words can be formed with the letters SCHOOL? (The words formed do not have to be real words.) 2) A six-sided die has been tossed 4 times. How many sequences of these 4 outcomes contain at least one number greater than 4?

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

1.3 and 1 1/3 are both closest to 1. hope this ; )

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0

the value of x is equal to 0.

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