Answer:
x = 3
Step-by-step explanation:
The midsegment is half the sum of the parallel bases, that is
= 13 ( multiply both sides by 2 to clear the fraction )
7x + 5 = 26 ( subtract 5 from both sides )
7x = 21 ( divide both sides by 7 )
x = 3
You have to use elementary transformations to create an identity matrix, and at the same time you have to start with a 4x4 identity matrix and affect that matrix with the same elementary changes and the final resulting matrix is the inverse matrix
I would have to say an acute triangle.
Hope this helps! ;)
Hello, there!
4 * x = 4x
4 * 5 = 20
Now, we have 3 + 4x + 20 = 31
Now, let's combine like terms.
3 and 20 are like terms.
3 + 20 = 23
Now, we have 4x + 23 = 31
Now, let's isolate the x.
4x + 23 = 31
-23 -23
4x = 8
FInally, we will simplify this.
4x = 8
--- ----
4 4
x = 2
Our final answer is x = 2
I hope I helped!
Let me know if you need anything else~
~ Zoe