Answer:
The mean increases and the median changes to 4.
Step-by-step explanation:
To find the mean. You need to add all of the numbers together then divide by how many numbers there are. The median is found by the middle number.
Answer:
r = - 
Step-by-step explanation:
Given that r varies inversely as t , then the equation relating them is
r = 
← k is the constant of variation
To find k use the condition t = - 6 when r = - 2, then
- 2 = 
( multiply both sides by - 6 )
12 = k, thus
r = 
← equation of variation
when t = - 7, then
r = 
= -
Answer:
n=5y-7.5
Step-by-step explanation:
Answer:
∠A→∠D is and vertical angle of ∠B→∠E
Step-by-step explanation:
Answer: C
4x7*2-25
4x49-25
196-25
= 171
