Answer: -12.5
Step by step explanation
Answer:
Given in the information set as
26, 34, 38, 49, 65, 76, 81
Sum = 369
No of entries = 7
Mean =52.71
When 1213 is included
New sum = 1582
No of entries =8
The new mean will be 197.75
Thus mean will be increased by 145.04
Answer:

Step-by-step explanation:
Solving for x:

In this form is easy to identify the factors of the quadratic function:
. The two solutions are the values that make each of the factors equals to zero.

Tbh idk but can u help me lol
Answer:x= 5
Step-by-step explanation:
5x-12=63
>5x=63+12=75
>x=75÷5
>x=15