Answer:
A rate of change can be positive or negative.
Step-by-step explanation:
Answer:
See explanation below
Explanation:
1) Option C is correct.
The average difference in husband and wife marriage ages in Cumberland County; μd
2) Option D is correct.
Null: The average difference in marriage ages in Cumberland County is 0.
Alt: The average difference in marriage ages is greater than 0.
3) Option A is correct
Null: μd = 0
Alt: μd > 0
4) Given:
n = 24
d' = 1.875
Sd = 4.812
Find test statistic:



Degree of freedom, df = n - 1 = 24 - 1 = 23
Pvalue 
Pvalue = 0.0344
Significance level = 0.05
5) Since p value is less than significance level, reject null hypothesis H0
Hence, there is strong evidence that, on average, husbands are older than their wives in Cumberland County
Answer: $$5$$ movies
Step-by-step explanation: Given: A movie club, one time fee
=
$
25
, movies
=
$
7
2nd club,
$
0
fee, movies
=
$
12
Cost equations for each club:
club 1:
C
1
=
25
+
7
M
club 2:
C
2
=
12
M
For the clubs cost to be equal:
C
1
=
C
2
25
+
7
M
=
12
M
Subtract
7
M
from both sides:
25
=
5
M
Divide by
5
:
M
=
25
5
=
5
5
movies
CHECK:
C
1
=
25
+
7
⋅
5
=
25
+
35
=
$
60
C
2
=
12
⋅
5
=
$
60
Answer:
x/3 - 3
Step-by-step explanation:
⅓(x - 9)
⅓(x) - ⅓(9)
x/3 - 3
No like terms
Answer:
A. -3x
Step-by-step explanation:
Terms are the parts of an expression that are separated by + or - signs
-3x is a term, because it is separated from the rest of the expression by a - sign.