Answer:
B. 6.025
Step-by-step explanation:
6.025 has 4 numbers 10.059 has five numbers so move the decimal place of 6.025 and add one 0
60.250
5 is in the fourth place value of both now
Answer:
x = 71/8
Step-by-step explanation:
Solve for x:
5 X (8 x - 71) = 0
Divide both sides by 5 X:
8 x - 71 = 0
Add 71 to both sides:
8 x = 71
Divide both sides by 8:
Answer: x = 71/8
Answer:
Follows are the solution to the given point:
Step-by-step explanation:
For option A:
In the first point let z be the number of heads which is available on the first two trails of tosses so, the equation is:

For option B:


Answer:
it’s b.
Step-by-step explanation:
(6)^2+(8)^2is not equal to (11)^2
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.