Abag contains 7 green marbles and 4 white marbles you select a marble at random what are the odds in favor of picking a green marble

Zoe placed colored blocks on a scale in science class. each block weighed 0.8 ounces. the total weight of all the colored blocks was 12.8 ounces. how many blocks did zoe place on the scale? write and solve an equation to find the answer.

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

Given abcd ac=38 and ae=3x+4 find the value of x