Answer (x,y) (3, -2)
Explanation:
using the
substitution method
y
=
x
−
5
→
(
1
)
y
=
−
2
x
+
4
→
(
2
)
since both equations are expressed in terms of x we
can equate them
⇒
x
−
5
=
−
2
x
+
4
add 2x to both sides
2
x
+
x
−
5
=
−
2
x
+
2
x
+
4
⇒
3
x
−
5
=
4
add 5 from both sides
3
x
+
5
−
5
=
4
+
5
⇒
3
x
=
9
divide both sides by 3
3
x
3
=
9
3
⇒
x
=
3
substitute this value in
(
1
)
y
=
3
−
5
=
−
2
As a check
substitute these values into
(
2
)
right
=
−
6
+
4
=
−
2
=
left
⇒
point of intersection
=
(
3
,
−
2
)
Answer:
Total Number of lines will be 28
Step-by-step explanation:
We can use combinations to solve this question.
Let the two Collinear points be denoted by A and B and the other other points be denoted by x1,x2,x3,x4, x5 and x6.
Suppose that only A and B are collinear.
The number of lines determined by any two of x1 to x6 are given by 6C2= 15
The number of lines from A or B and x1---x6 is given by 6C1 * 2C1= 12
The number of lines from A to B is 1.
Total Number of lines = 15+ 12+ 1= 28
answer is 7 pigs and 4 chicks
pigs' legs = 7 x 4 = 28
chicks' legs = 4 x 2 = 8
28 + 8 = 36 legs
Answer:
c.3 got a 100
Step-by-step explanation:
