K-7.2>2.1.
+7.2 +7.2
------------------
k> 9.3
are you suppose to solve for k?
Answer:
The answer to your question is f⁻¹(x) = ![\frac{1}{2} x - \frac{3}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D%20x%20-%20%5Cfrac%7B3%7D%7B2%7D)
Step-by-step explanation:
Function
f(x) = 2x + 3
Process
1.- Instead of f(x) write y
y = 2x + 3
2.- Interchange the variables
x = 2y + 3
3.- Solve for y
- Subtract 3 in both sides
x - 3 = 2y + 3 - 3
x - 3 = 2y
- Divide by 2
![\frac{1}{2} x - \frac{3}{2} = y](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D%20x%20-%20%5Cfrac%7B3%7D%7B2%7D%20%3D%20y)
4.- Write f⁻¹(x) instead of y
f⁻¹(x) = ![\frac{1}{2} x - \frac{3}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D%20x%20-%20%5Cfrac%7B3%7D%7B2%7D)
Answer:
63 men said no.
Step-by-step explanation
3/5 * 2/2 = 6/10, 6/10 - 3/10 (women) = 3/10 meaning 7/10 men said no. 90*1.7 = 153, 153-90=63
Let's use the distance formula:
![\sqrt{ (x_{1} - x_{2})^{2} + (y_{1} - y_{2})^{2}](https://tex.z-dn.net/?f=%20%5Csqrt%7B%20%28x_%7B1%7D%20-%20x_%7B2%7D%29%5E%7B2%7D%20%2B%20%28y_%7B1%7D%20-%20y_%7B2%7D%29%5E%7B2%7D)
So it is:
AB :
![\sqrt{(-5)^2 + 8^2} = 9.43](https://tex.z-dn.net/?f=%20%5Csqrt%7B%28-5%29%5E2%20%2B%208%5E2%7D%20%3D%209.43)
BC:
![\sqrt{5^2 + 0^2 } = 5](https://tex.z-dn.net/?f=%20%5Csqrt%7B5%5E2%20%2B%200%5E2%20%7D%20%3D%205)
CA:
![\sqrt{0^2 + 8^2} = 8](https://tex.z-dn.net/?f=%20%5Csqrt%7B0%5E2%20%2B%208%5E2%7D%20%3D%208%20)
So 9.43 + 5 + 8 =22.43