Its because 20 is doubling its self. Its using 100% of its number, While 40 is decreasing by 50%. Half of forty is 20. Half equals 50%.
Complete Question:
Solve the equation for x

Answer:

Step-by-step explanation:
Given

Required
Solve for x

Add 7 to both sides



Hence:
For
, 
Answer: sin(B)= h/c
h= csin(b)
Area= 1/2acsin(B)
Step-by-step explanation: i got the answers frfr on edge smh yall know how that is
The inverse function of
is
<h3>How to determine the inverse function?</h3>
The function is given as:

Rewrite as;

Swap the positions of x and y

Multiply through by -2

Square both sides
4x^2 = y + 3
Subtract 3 from both sides
y = 4x^2 - 3
Express as an inverse function

Hence, the inverse function of
is
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Answer:
To graph a linear equation, we can use the slope and y-intercept.
1. Locate the y-intercept on the graph and plot the point.
2. From this point, use the slope to find a second point and plot it.
3. Draw the line that connects the two points.
Step-by-step explanation: