Answer:
a number decreased by four
Step-by-step explanation:
Answer:
B) 9.2
Step-by-step explanation:
To find an average, you have to combine all of your numbers and then divide by how many there are.
So first, combine the values.
9.7 + 8.6 + 9.3 = 27.6
Now, divide by how many numbers you had, which is 3.
27.6 ÷ 3 = 9.2
Answer:
A
Step-by-step explanation:
Answer:
x=14
Step-by-step explanation:
2x+22=5x-20
First, subtract 2x from both sides
Then add 20 to both sides
Then divide by 3 to both sides
14=x
Check your answer:
Answer:
he academy has 20 students per teacher and need 12 tutors for 120 students