Answer:
Step-by-step explanation:
A(10,10) B(b,10b)
ax-2y=30

Divide both parts of the equation by 10:
a=5
Hence,
5x-2y=30
5(b)-2(10b)=30
5b-20b=30
-15b=30
Divide both parts of the equation by -15:
b=-2
Thus,
a=5 b=-2


Divide both parts of the equation by 2:
2.5x-15=y

The equation of the perpendiqular bisector
Hence,

0.40 as a decimal. 40% as a percent. :)
Answer:
t = d/r
Step-by-step explanation:
Given the equation, d = rt for <em>t</em><em>:</em>
Switch sides:
rt = d
Divide both sides by r to isolate<em> t</em>:<em> </em>

t = d/r
Answer:
7.15 hours or 7 hours 9 minutes.
Step-by-step explanation:
Time = distance / average speed.
= 715 / 100
= 7.15 hours.
A- price of adult's ticket
c- price of children's ticket
a+3c=20
a=c+2
c=a-2
a+3(a-2)=20
a+3a-6=20
4a=26
a=6.5
The cost of an adult's ticket is $6.50