Answer:
5
Step-by-step explanation:
We have an equation and are asked to find the input of x when y = 7.
The output = y = 7
The input = x
7 = 2x - 3
2x - 3 = 7
We need to find a number that multiplied by 2 which then is subtracted by 3 equals 7. We can use the backwards method to solve our answer.
2x - 3 = 7
7 + 3 = 2x
10 = 2x
Solve for x by dividing 2 from both sides :
x = 5.
Therefore, you would need an input of 5 to get 7 as the output.
Proof :
2(5) - 3 = 7
10 - 3 = 7
9^5 is 45
As, 9+9+9+9+9 =45
If you would like to find the average of 766 and 878, you can calculate this using the following steps:
766 + 878 = 1644
1644 / 2 = 822
The correct result would be 822.
Alees and Emma spend 1064 hours together
<em><u>Solution:</u></em>
Given that, Alees and Emma design an office park in 28 weeks
Each architect spends 19 hours each week on this project
To find: Total number of hours the architects work on this project
From given,
Total number of weeks = 28
Each architect spends 19 hours each week
Therefore,
Time spent in one week by Alees = 19 hours
Time spent in one week by Emma = 19 hours
<em><u>Total number of hours the architects work on this project</u></em>
Thus, they spend 1064 hours together
4/3 = x/21
So you can cross multiply and divide:
3x = 84
x = 28
Or you can say 3 times what equals 21? The answer is 7. Then multiply 4 times 7 to get the answer. Whichever makes more sense to you :)
