Answer:
6x - 12
Step-by-step explanation:
In this question, we area asked to write an expression for a mother’s age given some information about the children’s age. We proceed as follows:
Charlie is x years old and his sister is 4 years younger. His sister’s age would be x -4. The total of both ages would be their addition and that is x + x - 4 = 2x - 4
Now, the mother’s age is 3 times this quantity.
Mathematically, that is 3(2x -4) = 6x -12
The expression of the mother’s age is (6x-12) years
Answer:
(C) multiplication property of equality
Step-by-step explanation:
Answer:
396 Square feet
Step-by-step explanation:
1.) First find the side closest to you. 6 x 12 = 72. Then double it to match the parallel side. 72 x 2 = 144
2. Find the side to the right and left, 7 x 6 = 42. Then double it to match the parallel side. 42 x 2 =84
3.) Find the top side and bottom side. 12 x 7 = 84. Then double it to match the parallel side. 84 x 2 = 168
4.) Find the total surface area. 144+84+168=
5.) The total surface area is 396 square feet
Let me know if I am incorrect
7.55555556 is a mother way to put 7 5/9