m1+m7+m8=180
m8 and m12 are supplementary angles (not congruent)
m12 must be 120 (180-60)
Stuart is wrong
Answer:
Step-by-step explanation:
Three or more points that lie on the same line are collinear points.
I have highlighted the points so you can see where they lay on the lines. You can see only one set of points is on 2 different lines.
Please mark Brainliest when able.
Answer:
20%
a) a train goes 60 mph for 180 miles
50 miles
Step-by-step explanation:
6/30=.20 = 20%
180 miles divided by 60 mph=3 hours
80%x = 40 miles
.8x=40
.8x/.8=40/.8
x=50 miles
Answer:
Step-by-step explanation:
Yes it is
Answer:
None,
a=1/2
Step-by-step explanation:
Lets group together 'a' terms in one side of equations and lone terms on the other.
To do this, simply sum 'a' to both sides of equation, and also, subtract -1 (lone term).
3a+a=3-1
this leads to
4a=2
Where we obtain a=1/2