Answer:
The inverse is (x^2-5)/2
Step-by-step explanation:
y =sqrt(2x+5)
Exchange x and y
x = sqrt(2y+5)
Solve for y
Square each side
x^2 = (sqrt(2y+5))^2
x^2 = 2y+5
Subtract 5 from each side
x^2 -5 = 2y-5+5
x^2 -5 = 2y
Divide each side by 2
(x^2-5)/2 = 2y/2
(x^2-5)/2 = y
The inverse is (x^2-5)/2
Answer:

Step-by-step explanation:
The scale factor of dilation of triangle ΔOPQ, S.F. = 3
The center of dilation = Point <em>Q</em>
Therefore;
The length of the segment,
= 3 × The length of the segment,
Similarly;
The length of the segment,
= 3 × The length of the segment,
By Pythagoras theorem, we have;

Therefore;


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I'd he happy to, But you forgot to post the question.
Answer:
3^12
Step-by-step explanation:
Simplify the expression, 3^10/3^-2.
Next, solve for the sum. which will be 3^12.
Full answer is 531441
Answer:
the number is 4
Step-by-step explanation:
we can write this as
x + 15 = 19
now we transpose
x= 19-15
x= 4