Answer:
17.3
Step-by-step explanation:
To solve this equation, you need to use the pythagorean theorem which is:
![a^{2} +b^{2}= c^{2}](https://tex.z-dn.net/?f=a%5E%7B2%7D%20%2Bb%5E%7B2%7D%3D%20c%5E%7B2%7D)
a= length
b= height
c= hypotenuse
First, substitute in your values for the equation:
![10^2+b^{2} =20^{2}](https://tex.z-dn.net/?f=10%5E2%2Bb%5E%7B2%7D%20%3D20%5E%7B2%7D)
Then, use the squares in the equation:
![100+b^{2} =400](https://tex.z-dn.net/?f=100%2Bb%5E%7B2%7D%20%3D400)
Then, subtract 100 from both sides to isolate b:
![b^{2} =300](https://tex.z-dn.net/?f=b%5E%7B2%7D%20%3D300)
Finally, square root both sides to get your answer:
![b=17.3205080757](https://tex.z-dn.net/?f=b%3D17.3205080757)
Then round to the nearest tenth which gives you 17.3.
You didnt post the picture. Just so you know
Answer: (x, y)=(0, -6)
Step-by-step explanation:
To solve a system of equations there are usually 3 general ways.
- Elimination
- Substitution
- Augmented Matrix
Since the question is asked to use <u>elimination</u>, we are going to use it.
--------------------------------------------------------------------------------------
-5x+4y=30
2x+3y=-12
-10x+8y=60
10x+15y=-60
23y=0
y=0
------------------------------------------------------------------------------------------
Substitute the y value into any one of the equations
2x+3y=-12
2x+3(0)=-12
2x+0=-12
x=-6
Hope this helps!! :)
Please let me know if you have any questions
Answer:
Eddie O'Neil found a car advertised at a local used-car dealership for $34,000. The car is clean and in good condition. Its average retail value is $33,400.
Step-by-step explanation: