Answer:
5.2
Step-by-step explanation:
Add up the amount of miles she actually reached to
2.4 + 3.1 =
5.5 = miles already traveled
And then subtract it from the 8 mile trail
8 - 5.5 =
2.5 miles
About 2.5 or 3 miles (rounded to the tenth or whole number?)
The perfect squares on either side of 21 are 16 and 25 of which the roots are:
4 and 5
The fourth choice. For example, (x+2)(x-2)>0 we'll get x>2 or x<-2 because whenever you substitute x>2 for example x = 3, the value will be higher than 0 itself.
If we substitute x = 3 (for x>2)
We'll get (3+2)(3-2)>0
5(1)>0
5>0 The statement is true.
If we substitute x = -3 (for x<-2)
We'll get (-3+2)(-3-2)>0
-1(-5)>0
5>0 The statement is true.
We don't say x>2 AND x<-2, In math, we only say x>2 OR x<-2
