I took the test and it’s Z
<span>1. know what the variables are and identify them 2. Group all the same types together that are on one side 3. add or subtract whole numbers so they are on one side 4. add or subtract variables 5. Multiply or Divide the variables to get them to one side </span>
Well for 11, it is an inequality, a > sign or < sign with a little underscore mean either "greater than or equal to" or "less then or equal to" so 30> 12+m (>with an underscore) means 30 is greater than or equal to 12+m
60% of
35 is 21
Change the percentage (60) into a decimal by dividing it over 100:
Divide 21 by the decimal:
<span>
</span>
let's call the children "c" and the adults "a"
the total # of people in the restaurant = c+a
so 2/9 of (c+a) = a
therefore 2/9c + 2/9a = a
and a + 95 = c since there are 95 MORE children.
Let's substitute a+95 for c in the equation 2/9(c+a) = a
this gives us 2/9(a+95 + a) = a
then 2/9 a + 2/9(95) + 2/9(a) = a
so 4/9a +190/9 = a
and 190/9 = 5/9 a
so 190 must = 5a
finally a = 38 so c must = 38 + 95 = 133 there are 133 children
