Answer:
the second one
and i'm truly sorry if i gave you the wrong answer
Step-by-step explanation:
Answer:
Using a globe and some string might be more convenient. A great circle is the shortest path between any two points on the earth's surface.
I hope I helped! ^-^
Answer:
When n=1, there is 1 dot. When n=2, there are 3 dots. When n=3, there are 6 dots. so when n=1 the eqaution would show as when sloving this combin the like terms in the parenthesis so 1+1 =2 and 1*2 = 2 when that is divided it equals 1.
Step-by-step explanation:
PLATO answer
Answer:
115<40+15x
i believe this is right. 115 is what he has and what he spends has to be less than that and x is how many lines so solve for x to find how many lines he can have
Step 1) Solve the second equation for
x
:
x
+
3
y
=
−
5
x
+
3
y
−
3
y
=
−
5
−
3
y
x
+
0
=
−
5
−
3
y
x
=
−
5
−
3
y
Step 2) Substitute
−
5
−
3
y
for
x
in the first equation and solve for
y
:
3
(
−
5
−
3
y
)
−
2
y
=
7
−
15
−
9
y
−
2
y
=
7
−
15
−
11
y
=
7
15
−
15
−
11
y
=
15
+
7
0
−
11
y
=
22
−
11
y
=
22
−
11
y
−
11
=
22
−
11
−
11
y
−
11
=
−
2
y
=
−
2
Step 3) Substitute
−
2
for
y
in the solution to the second equation at the end of Step 1 and calculate x:
x=−5−(3×−2)
x=−5−(−6)
x=−5+6
x=1
The solution is x=1 and y=−2
