So,
To round the nearest thousand, look at the number in the hundredths place.
If n ≥ 5, round up
If n < 5, round down
4 < 5, therefore round down.
389,422 --> 389,000
There is 4.88% decrease in Olivia's score.
Step-by-step explanation:
Given,
Score on first math test = Old value = 82 points
Score on second math test = New value = 78 points
Change = New value - Old value
Change = 78 - 82 = -4
The negative sign indicates the decrease.
Decrease percent = 
Decrease percent = 
Decrease percent = 4.88%
There is 4.88% decrease in Olivia's score.
Keywords: percentage, difference
Learn more about percentage at:
#LearnwithBrainly
Answer:
true
Step-by-step explanation:

* substitute 30 for x *

we're left with 15 < 20 which is true
Answer:
x = 5
Step-by-step explanation:
11x - 6x = 4 + 21
5x = 25 (÷5)
x = 5
-36 one of many possible answers.