I’m pretty sure that it’s C, because you distribute the 2 that makes it 2(10)+2x-8, then you multiply 2 by 10 and get 20+2x-8, combine like terms so 20-8=12 that leaves you with 2x+12.
15,518, because it is over 15,500 and below 16,499.999999...
Answer:
2x +110= 180
2x=70
x=35
Step-by-step explanation:
Answer:
X=121
Step-by-step explanation:
Reorder √x + 20 so highest orders Term are first
20+√x=9
We need to group all the variables term on one side and constant term at the other side. Therefore move the term 20 to the other side of equation 20+√x=9
√x=9-20
√x=-11
Eliminate the root
X=121
Answer:
The solution is similar to the 2-point form of the equation for a line:
y = (y2 -y1)/(x2 -x1)·x + (y1) -(x1)(y2 -y1)/(x2 -x1)
Step-by-step explanation:
Using the two points, write two equations in the unknowns of the equation of the line.
For example, you can use the equation ...
y = mx + b
Then for the points (x1, y1) and (x2, y2) you have two equations in m and b:
b + (x1)m = (y1)
b + (x2)m = (y2)
The corresponding augmented matrix for this system is ...
____
The "b" variable can be eliminated by subtracting the first equation from the second. This puts a 0 in row 2 column 1 of the matrix, per <em>Gaussian Elimination</em>.
0 + (x2 -x1)m = (y2 -y1)
Dividing by the value in row 2 column 2 gives you the value of m:
m = (y2 -y1)/(x2 -x1)
This value can be substituted into either equation to find the value of b.
b = (y1) -(x1)(y2 -y1)/(x2 -x1) . . . . . substituting for m in the first equation