Answer: k = -9
Step-by-step explanation:
-126 = 14k
------- -------
14 14
-126 divided by 14 = -9
k = -9
30 because half of 30 is 60and 60 is like 100 cuz it is the whole so half of 60 is 30
Answer:
-8
Step-by-step explanation:
-21-(-13)
=-21+13
=-8 is the answer......
Answer:
x = 9
Step-by-step explanation:
Sum of all angles of a triangle = 180
63 + 7x + 6x = 180
63 + 13x =180
13x = 180 - 63
13x = 117
x = 117/13
x = 9
Answer:
Two tailed
Step-by-step explanation:
Given that a security expert claims that exactly 13% of all homeowners have a home security alarm.
Here we have to check whether the contention of security expert is correct or not
The test is to be done for the proportion of homeowners who have a home security alarm to total homeowners.
Let p be the proportion.
For this we set up hypotheses as:

This is a two tailed test
Because alternate is for not equal to. If alternate is for > or < we say one tailed and if not equal to we say two tailed.