Here’s the the answer and an explanation of how to get it :)
Answer:
The single decimal multiplier is 26%.
Step-by-step explanation:
Since we have given that
You use to increase by 5% followed by 20% increase.
So, the single decimal multiplier would be
Hence, the single decimal multiplier is 26%.
Answer: 
Step-by-step explanation:
For this exercise you need to remember that a Square is defined as a Quadrilateral whose sides are equal in lenght and all its interios angles measure 90 degrees.
Based on that definition, and observing the squarE given in the picture attached, you can write the following equation:

Then, you need to solve for the variable "x" in order to find its value. You get that this is:

Now, knowing the value of "x" you can susbstitute it into any expression that represents the side of the square, and then you must evaluate in order to find the lenght of the side.
You get:

Answer:
A, B, C and D. are solutions.
Step-by-step explanation:
x^2 + y^2 = 13
x^2 - y^2 = 5
Check which roots fit the original equations:
If x = 3, A gives
9 + y^2 = 13 giving y = +/- √4 = 2 or -2.
Now plug in x = 3 and y = 2 in the second equation:
9 - (2)^2 = 5
Therefore (3,2) is a solution of the 2 equations.
Following the same procedure for B, C and D:
B. Substituting x = 3 and x = -2 fits both equations so (3, -2) is a solution.
The same is true for C and D.
Answer:
a= -c-3h/h
Step-by-step explanation: