Adenine , cytosine, guanine, and thymine
Answer:
Perpendicular bisectors.
Step-by-step explanation:
This is called a circumscribed circle.
First you construct the perpendicular bisector of one side, then repeat with a second side. Where these lines cross is the center of the circle.
Answer:
Paul spent $12.65
Step-by-step explanation:
Create a system of equations where p is how much Paul spent and t is how much Tammy spent.
p + t = 37.85
p = t - 12.55
Solve by substitution:
p + t = 37.85
(t - 12.55) + t = 37.85
2t - 12.55 = 37.85
2t = 50.4
t = 25.2
Find how much Paul spent by plugging in 25.5 as t into p = t - 12.55
p = t - 12.55
p = 25.2 - 12.55
p = 12.65
So, Paul spent $12.65
(11a+6)-(7a+12) should equal 18a-6 in simplest form.
Answer:
b, -19
Step-by-step explanation:
