Joelle would like to tip her hairdresser 20%. if her haircut was $38.00, which expression should she use to find the tip amount?

The expression would be:    $38 x .2  or $38 x .20

                                                or $38 x .20 = $7.60

All of those expressions mean the same thing.

Step-by-step explanation:

First: You always need to convert the percentage to a decimal or fraction... whichever you are more comfortable with. If using a calculater, then convert to a decinal.

To convert the 20% to a decimal. Percents are out of 100 so it would be 20/100 or .20 or .2  (all three of those values are equivalent - or the same)

Second: You multiply $38 * .20 = $7.60 <= that is the tip she would give

*If they ask what the total paid is, then you would simply add the original $38 to the $7.60 tip to get $45.60 total paid.

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)

in mathematics, a constraint is a condition of an optimization problem that the solution must satisfy. there are several types of constraints—primarily equality constraints, inequality constraints, and integer constraints. the set of candidate solutions that satisfy all constraints is called the feasible set.

hoped i'm right lol