First isolate the x. Always remember that the way you do this is the opposite of the what is happening to the number you want to move.
You want to move the -5 from the left side to the right side by doing the opposite and adding it to both sides.
Like: 27x-5=-5+11
27x-5+5=11+5
So 27x=11 Continue to isolate the variable
Answer: The mean of the list given is 10.
To find the mean of a list of numbers, first add up all the numbers.
10 + 10 + 11 + 9 = 40
Now, divide the list by the total number of people.
40 / 4 = 10
The mean of this list is 10.
Answer:
28.21 = 4x + 4.61
Step-by-step explanation:
Since x equals the bags of apples and he bought 4 of them, we would multiply x by 4 like this: 4x
$4.61 were already added to the total cost of $28.21
If we wanted to find out how much each bag cost, we subtract 4.61 from both sides
28.21 = 4x + 4.61
- 4.61. - 4.61
23.6 = 4x
Then, divide both sides by 4
23.6/4 = 4x/4
x = 5.9
Each bag of apples cost $5.90
Answer:
A U B= 1,2,3,4,6,10,11
Step-by-step explanation:
because A union B is all number from set A and set B together without repeating
Answer:
equation: 5t + 3t = 38
answer: 5 hours
step-by-step explanation:
5t + 3t = 38
5(5) + 3(5)
25 + 15
40