Total distance John drove=450 miles
total time=8 hours
let the number of hours he drove on highway be x, number of hours he drove on turnpike will be (8-x) hours
since
distance=speed*time
distance traveled in highway=50x
distance traveled in turnpike=60(8-x)
thus the total distance will be:
50x+60(8-x)=450
simplifying the above
50x+480-60x=450
-10x=450-480
-10x=-30
thus
x=3 hours
Thus he drove on highway for 3 hours.
I believe it is the second one hope that helped
Answer:
b,c,e
Step-by-step explanation:
In this question, we have to use the intersecting chord theorem, and the formula which is
In the given circle, values of AP, CP and DP are 12m, 6m and 5m respectively .
Substituting the values in the formula, we will get
Dividing both sides by 5
This solution has no solutions because when you do a substitution method you might end up getting rid of the variable and left with a constant.