Answer:
loss: 2 points
Step-by-step explanation:
Mathematically: +4 - 6 = -2. The "net" loss was 2 points.
Answer:
For the first one the answer is:
<K = 31°
Sorry I don't know the second one.
Answer:
Option B is true
Step-by-step explanation:
We are given that three right triangles .Triangles ABD,CAD and CBA are similar.
When two triangles are similar then, the corresponding sidea are in equal proportion.
We have AB=5 units
AC= 7 units
BC=x
Triangles ABD is similar triangle CBA
![\frac{AB}{BD}=\frac{BC}{AB}](https://tex.z-dn.net/?f=%5Cfrac%7BAB%7D%7BBD%7D%3D%5Cfrac%7BBC%7D%7BAB%7D)
![AB^2=BC\cdot BD](https://tex.z-dn.net/?f=AB%5E2%3DBC%5Ccdot%20BD)
![(5)^2=BC\cdot BD](https://tex.z-dn.net/?f=%285%29%5E2%3DBC%5Ccdot%20BD)
![BC\cdot BD=25](https://tex.z-dn.net/?f=BC%5Ccdot%20BD%3D25)
When triangle CAD and CBA are similar
Then,![\frac{AC}{BC}=\frac{CD}{AC}](https://tex.z-dn.net/?f=%5Cfrac%7BAC%7D%7BBC%7D%3D%5Cfrac%7BCD%7D%7BAC%7D)
![AC^2=CD\cdot BC](https://tex.z-dn.net/?f=AC%5E2%3DCD%5Ccdot%20BC)
![(7)^2=CD\cdot BC](https://tex.z-dn.net/?f=%287%29%5E2%3DCD%5Ccdot%20BC)
![49=CD\cdot BC](https://tex.z-dn.net/?f=49%3DCD%5Ccdot%20BC)
In traingle CBA, uisng pythagoras theorem
![AB^2+AC^2=BC^2](https://tex.z-dn.net/?f=AB%5E2%2BAC%5E2%3DBC%5E2)
![BC\cdot BD+BC\cdot CD=x^2](https://tex.z-dn.net/?f=BC%5Ccdot%20BD%2BBC%5Ccdot%20CD%3Dx%5E2)
![25+49=x^2](https://tex.z-dn.net/?f=25%2B49%3Dx%5E2)
![x^2=74](https://tex.z-dn.net/?f=x%5E2%3D74)
Hence, option B is true.
What's the question? what's the question?