Answer:
Where the heck is the question my dude
Step-by-step explanation:
:)
Answer:
It is -11.3
Step-by-step explanation: Hope this help :)
Hello! I would love to help!
Let's start with this part of the equation: "the sum of a number and seven"
Alright. We know that x represents an unknown number. Do you see a part of the equation that could translate to "an unknown number?"
I see "a number." So let's fill X in for "a number.
Alright. So now we have "the sum of x and 7."
Next, let's remember that sum means adding. So we just need to 7 to x
X+7
So, now instead of "the sum of a number and 7" we have x+7.
Alright. Now we just have to do the "twice." When it is asking for "twice", it is asking us to multiply our answer by two. But we need to multiply both x and 7. The best way to do that is to put our "x+7" in parenthesis and put a two outside.
2(x+7)
That's your answer! 2(x+7)
Hope this helped! Comment if you have any questions!
Answer: The value of x =2 units.
Explanation:
Since we have given that
AD= CD
BE= EA
So, we get that D and E are the mid-points of AC and AB respectively.
So, by Mid- point theorem , which states that the line joining the two midpoints is parallel to third side and it is half in length of third side i.e.
![DE=\frac{1}{2}BC](https://tex.z-dn.net/?f=DE%3D%5Cfrac%7B1%7D%7B2%7DBC)
So, we put the value of DE and BC ,
![5x-3=\frac{1}{2}\times (x+12)\\\\2(5x-3)=x+12\\\\10x-6=x+12\\\\10x-x=12+6\\\\9x=18\\\\x=\frac{18}{9}=2](https://tex.z-dn.net/?f=5x-3%3D%5Cfrac%7B1%7D%7B2%7D%5Ctimes%20%28x%2B12%29%5C%5C%5C%5C2%285x-3%29%3Dx%2B12%5C%5C%5C%5C10x-6%3Dx%2B12%5C%5C%5C%5C10x-x%3D12%2B6%5C%5C%5C%5C9x%3D18%5C%5C%5C%5Cx%3D%5Cfrac%7B18%7D%7B9%7D%3D2)
Hence, the value of x =2 units.