4
x
+
y
−
2
z
=
0
4
x
+
y
-
2
z
=
0
,
2
x
−
3
y
+
3
z
=
9
2
x
-
3
y
+
3
z
=
9
,
−
6
x
−
2
y
+
z
=
0
-
6
x
-
2
y
+
z
=
0
x
+
2
y
=
4
x
+
2
y
=
4
,
2
x
+
4
y
=
8
2
x
+
4
y
=
8
3
x
+
y
=
4
3
x
+
y
=
4
,
6
x
−
7
y
=
2
Answer:
Y= -2x +40
Step-by-step explanation:
Answer:
136 inches wide
Step-by-step explanation:
Answer:
The correct option is a
Step-by-step explanation:
From the question we are told that
The sample size is n = 415
The sample proportion is 
Now
The null hypothesis is 
The alternative hypothesis is 
The test statistics is mathematically evaluated as
substituting values
195 ÷ 4 = 48.75
Is this what you wanted?