Step-by-step explanation:
63+81
gcf = 9
63÷9=7, 81÷9=9
so, 63+81 = (9×7)+(9×9)
= 9×(7+9)
63+81 = 144
9x(7+9) = 9×16 = 144
Answer:
x = -2 ; y = -6
Step-by-step explanation:
Let y = 3x be eqn.1
So putting eqn.1 in 5x + 4y = -34 gives ,
![5x + 4y = - 34](https://tex.z-dn.net/?f=5x%20%2B%204y%20%3D%20%20-%2034)
![= > 5x + 4(3x) = - 34](https://tex.z-dn.net/?f=%20%3D%20%20%3E%205x%20%2B%204%283x%29%20%3D%20%20-%2034)
![= > 5x + 12x = - 34](https://tex.z-dn.net/?f=%20%3D%20%20%3E%205x%20%2B%2012x%20%3D%20%20-%2034)
![= > 17x = - 34](https://tex.z-dn.net/?f=%20%3D%20%20%3E%2017x%20%3D%20%20-%2034)
![= > x = \frac{ - 34}{17} = - 2](https://tex.z-dn.net/?f=%20%3D%20%20%3E%20x%20%3D%20%20%5Cfrac%7B%20-%2034%7D%7B17%7D%20%20%3D%20%20-%202)
Putting the value of x in eqn.1 gives :-
![y = 3x = 3 \times ( - 2) = - 6](https://tex.z-dn.net/?f=y%20%3D%203x%20%3D%203%20%5Ctimes%20%28%20-%202%29%20%3D%20%20-%206)
Answer:
If the painter will paint for $25 per hour, then the amount of dollars for h number of hours is $25h , if the cost of paint is $15 per can, 10 cans will be $150. The cost C of painting the house is
C= 25h +150
The amount of hours the painter paints is make h the subject of the formula
h= (C - 150)/25
Answer:
It is probably 6 inches wide. I tried my best
Step-by-step explanation:
Answer: 10/9
Step-by-step explanation:
divide 4/6 by 2 = 2/3 and then multiply 2/3 by 3 to get 6/9 then add
6/9 + 4/9 = 10/9