Answer:
it will be 120 -×- will be plus hope ur help and mark me brainlist
-3×-40=120 when we multiply the minus to minus it will be plus
Answer:
Step-by-step explanation:
5x-7=24
Answer:
They sold 468 rolls of wrapping paper
Step-by-step explanation:
multipl how many boxes each of them sold by how many rolls were in each box. You get 252 rolls and 216 rolls. Then add both of those together to get 468 rolls of wrapping paper.
Answer:
the answer is -7
Step-by-step explanation:
hope this helps
Answer:
![x=3](https://tex.z-dn.net/?f=x%3D3)
Step-by-step explanation:
![~~~~~~~\dfrac{10}{3} \cdot 3^x - 3^{x-1} = 81\\\\\\\implies 10 \cdot 3^{x-1} - 3^{x-1} = 81~~~~~~~~~~~~~~~~~~~~;\left[\dfrac{a^m}{a^n} =a^{m-n} \right]\\\\\\\implies 9\cdot 3^{x-1} = 81\\\\\\\implies 3^{x-1} = \dfrac{81}{9}\\\\\\\implies 3^{x-1} = 9\\\\\\\implies 3^{x-1} = 3^2\\\\\\\implies x -1 = 2\\\\\\\implies x = 2+1\\\\\\\implies x = 3](https://tex.z-dn.net/?f=~~~~~~~%5Cdfrac%7B10%7D%7B3%7D%20%5Ccdot%203%5Ex%20-%203%5E%7Bx-1%7D%20%3D%2081%5C%5C%5C%5C%5C%5C%5Cimplies%2010%20%5Ccdot%203%5E%7Bx-1%7D%20-%203%5E%7Bx-1%7D%20%3D%2081~~~~~~~~~~~~~~~~~~~~%3B%5Cleft%5B%5Cdfrac%7Ba%5Em%7D%7Ba%5En%7D%20%20%3Da%5E%7Bm-n%7D%20%5Cright%5D%5C%5C%5C%5C%5C%5C%5Cimplies%209%5Ccdot%203%5E%7Bx-1%7D%20%3D%2081%5C%5C%5C%5C%5C%5C%5Cimplies%203%5E%7Bx-1%7D%20%3D%20%5Cdfrac%7B81%7D%7B9%7D%5C%5C%5C%5C%5C%5C%5Cimplies%203%5E%7Bx-1%7D%20%3D%209%5C%5C%5C%5C%5C%5C%5Cimplies%203%5E%7Bx-1%7D%20%3D%203%5E2%5C%5C%5C%5C%5C%5C%5Cimplies%20x%20-1%20%3D%202%5C%5C%5C%5C%5C%5C%5Cimplies%20x%20%3D%202%2B1%5C%5C%5C%5C%5C%5C%5Cimplies%20x%20%3D%203)