We have the expression
![5x+2x](https://tex.z-dn.net/?f=5x%2B2x)
We have to convert the expression in a single-term expression. We apply the distributive property:
![5x+2x=(5+2)\cdot x=7x](https://tex.z-dn.net/?f=5x%2B2x%3D%285%2B2%29%5Ccdot%20x%3D7x)
b) We have to substitute five different values into the expressions 5x+2x and 7x-1.
The first expression is equal to 5x+2x=7x.
We then can predict that the difference between 7x and 7x-1 is 1.
For example, for x=2, we have 7x=7*2=14 and 7x-1=7*2-1=14-1=13.
We can calculate if the two expressions can be equal, we write:
![\begin{gathered} 5x+2x=7x=7x-1 \\ 7x=7x-1 \\ 7x-7x=-1 \\ 0=-1\longrightarrow\text{False} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%205x%2B2x%3D7x%3D7x-1%20%5C%5C%207x%3D7x-1%20%5C%5C%207x-7x%3D-1%20%5C%5C%200%3D-1%5Clongrightarrow%5Ctext%7BFalse%7D%20%5Cend%7Bgathered%7D)
There is no value that can make both expressions equal.
Both equations have a difference of 1 for any value of x.
Answer:
y = -1/3x -2
Step-by-step explanation:
It’s c just to let you know I have done this before
Answer:
i think the answer is -7/17
Step-by-step explanation:
hope it help :) i dont really good with fraction
Answer:
70
Step-by-step explanation:
Complementary angles equal 90 degrees
90 - 20 = 70
I hope this helps!