rule method - writing a common property/a descriptive phrase, and agreeing that those objects, and only those are elments of the sets. ex. rule method X= X is an even number between 25 and 40. roster method X= {26,28,30,32,34,36,38}
7+7+7+7+7+7+7+7 is the same as 7 multiplied by 8, so the answer is 56.
7+7+7+7=28
One way (there may be more) is: 77/7 + 7 + 7 + 7 + 7/7 + 7/7 +7/7 + 7/7 + 7/7 = 11 + 21 + 5 = 37
7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 = 732 = 1104427674243920646305299201
WHAT ARE THE ELMENTS IN KA13Si3013
by their atomic number
15
Yes.
Actinides family
Calcium, carbon and oxygen
by the elments an protons
nitrogen and oxygen in NO2
alcohols carbohydrates sugars
the periodic table has all the elments
Salt.
How are elements described in terms of their atoms