Use intercepts to graph the line described by the equation. −5y = −8x + 40
1 answer:
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X=3
Step By Step:
find x
8 + ? • 2 = 22
22 ÷ 2 = 11
There for x = 3
8 + 3 = 11.
Step By Step:
find x
8 + ? • 2 = 22
22 ÷ 2 = 11
There for x = 3
8 + 3 = 11.
Answer: The average was 9 years old find the average age of both groups is 10 years old.
Step-by-step explanation:
Formula foe average :
Given : The first group of students consists of 10 and their average age was 13 years old.
i.e. (1)
The next group consisted of 30 students and their average was 9 years old.
i.e. (2)
Then from (1) and (2) , the sum of both groups (first group and next group )students = 130+270 =400
Combined students of both groups (first and next group )= 10+30=40
Now , the average of both groups =
Hence, the average was 9 years old find the average age of both groups is 10 years old.