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18 / 100 * 250 = 45
The retail price of the shoes is $45.
Answer:
27 is a cubed number because 3 to the third power, or cubed, is 27. 3*3*3=27. 3*3=9.
9*3=27
Step-by-step explanation:
Answer: 40.9
Step-by-step explanation:
Given
angle given is ![23^{\circ}](https://tex.z-dn.net/?f=23%5E%7B%5Ccirc%7D)
![RC=16](https://tex.z-dn.net/?f=RC%3D16)
Using trigonometry
![\Rightarrow \sin 23^{\circ}=\dfrac{RC}{PC}\\\\\Rightarrow \sin 23^{\circ}=\dfrac{16}{X}\\\\\Rightarrow X=\dfrac{16}{\sin 23^{\circ}}\\\\\Rightarrow X=40.948\approx 40.9](https://tex.z-dn.net/?f=%5CRightarrow%20%5Csin%2023%5E%7B%5Ccirc%7D%3D%5Cdfrac%7BRC%7D%7BPC%7D%5C%5C%5C%5C%5CRightarrow%20%5Csin%2023%5E%7B%5Ccirc%7D%3D%5Cdfrac%7B16%7D%7BX%7D%5C%5C%5C%5C%5CRightarrow%20X%3D%5Cdfrac%7B16%7D%7B%5Csin%2023%5E%7B%5Ccirc%7D%7D%5C%5C%5C%5C%5CRightarrow%20X%3D40.948%5Capprox%2040.9)
Using cosine formula
![\Rightarrow \cos 23^{\circ}=\dfrac{PR}{X}\\\\\Rightarrow PR=40.9\times \cos 23^{\circ}\\\Rightarrow PR=37.69\approx 37.7](https://tex.z-dn.net/?f=%5CRightarrow%20%5Ccos%2023%5E%7B%5Ccirc%7D%3D%5Cdfrac%7BPR%7D%7BX%7D%5C%5C%5C%5C%5CRightarrow%20PR%3D40.9%5Ctimes%20%5Ccos%2023%5E%7B%5Ccirc%7D%5C%5C%5CRightarrow%20PR%3D37.69%5Capprox%2037.7)
Answer:
B
Step-by-step explanation:
- 3/2 is - 1.5 , and B is - 1.5
Answer:
Kinetic energy = 135 kJ
Potential energy = 73.5 kJ
Explanation:
Mass of sky diver = 75 kg
Velocity = 60 m/s
Height = 100 m
Kinetic energy is given by the expression,
, where m is the mass and v is the velocity.
So Kinetic energy = ![\frac{1}{2} *75*60^2=135000J=135kJ](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D%20%2A75%2A60%5E2%3D135000J%3D135kJ)
Potential energy is given by the expression, PE =mgh, m is the mass, g is the acceleration due to gravity value and h is the height.
So, Potential energy = 75*9.8*100 = 73500J = 73.5 kJ