Xy=49
x-y=13
x=13+y
y(13+y)=49
y²+13y-49=0
solve using the quadratic formula
Final Price: 17,510.40 dollars
You multiple the tax by the original to get the amount of tax. Then you add it to your original to get total price.
To find the inverse we have to first change the function notation to 'y'
So
f(x) = -x becomes y = -x
Next, we have to switch the x and y values
So, y = -x becomes x = -y
Now, we have to solve for y.
y = -x
So the inverse of f(x) = -x is:
Answer:
Step-by-step explanation:
radius (r) = 4 cm
area of the circle
= π * r²
= 3.14 * 4 * 4
=50.24 cm²
hope it will help :)
Answer:
Trigonometric functions are used in obtaining unknown angles and distances from known or measured angles in geometric figures. Trigonometry developed from a need to compute angles and distances in such fields as astronomy, mapmaking, surveying, and artillery range finding.