Answer:
The current temperature = 34.2°C
Step-by-step explanation:
Initial temperature = 46.8°C
After 20 minutes temperature reduced by 12.6°C
Therefore, the current temperature is = 46.8°C - 12.6°C = 34.2°C
Step-by-step explanation:
here we have to know that, if A/B=A'/B' is equal to 1 it means it doesn't cut. if it isn't equal to 1, it does.
A=3 B=4
A'=4 B'=3
3/4=4/3 it cuts. Now, they are straight lines because we don't have x² or anything, so they can just intersect once between them.
The area of the room that is not covered by the rug is: ![21x^3+26x^2-24x+9](https://tex.z-dn.net/?f=21x%5E3%2B26x%5E2-24x%2B9)
Step-by-step explanation:
Let L be the length of the room
and
W be the width of the room
Then
L = 3x^2
W = 7x+14
Area of the bedroom:
![A_r = L*W\\=3x^2(7x+14)\\=21x^3+42x^2](https://tex.z-dn.net/?f=A_r%20%3D%20L%2AW%5C%5C%3D3x%5E2%287x%2B14%29%5C%5C%3D21x%5E3%2B42x%5E2)
Area of Rug:
Let S be the side of rug
S = 4x+3
![A_{rug} =S^2\\=(4x+3)^2\\=(4x)^2+2(4x)(3)+(3)^2\\=16x^2+24x+9](https://tex.z-dn.net/?f=A_%7Brug%7D%20%3DS%5E2%5C%5C%3D%284x%2B3%29%5E2%5C%5C%3D%284x%29%5E2%2B2%284x%29%283%29%2B%283%29%5E2%5C%5C%3D16x%5E2%2B24x%2B9)
The area of the room that is not covered by the rug will be obtained by subtracting the area of the rug from the area of the room.
So,
![Area\ of\ room\ not\ covered\ by\ rug =A_r - A_{rug}\\= 21x^3+42x^2-(16x^2+24x+9)\\=21x^3+42x^2-16x^2-24x-9\\=21x^3+26x^2-24x+9](https://tex.z-dn.net/?f=Area%5C%20of%5C%20room%5C%20not%5C%20covered%5C%20by%5C%20rug%20%3DA_r%20-%20A_%7Brug%7D%5C%5C%3D%2021x%5E3%2B42x%5E2-%2816x%5E2%2B24x%2B9%29%5C%5C%3D21x%5E3%2B42x%5E2-16x%5E2-24x-9%5C%5C%3D21x%5E3%2B26x%5E2-24x%2B9)
Hence,
The area of the room that is not covered by the rug is: ![21x^3+26x^2-24x+9](https://tex.z-dn.net/?f=21x%5E3%2B26x%5E2-24x%2B9)
Keywords: Rectangle, square
Learn more about area at:
#LearnwithBrainly
Answer:
The length of the tiger is 320 cm.
Step-by-step explanation:
Let the height of a bengal tiger be x.
It is given that the length of tiger tail is around 30% of its total length.
The length of tiger's tail is
.
The total length of a bengal tiger's tail is 96 cm.
![\frac{30}{100}x=96](https://tex.z-dn.net/?f=%5Cfrac%7B30%7D%7B100%7Dx%3D96)
![30x=9600](https://tex.z-dn.net/?f=30x%3D9600)
![x=\frac{9600}{30}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B9600%7D%7B30%7D)
![x=320](https://tex.z-dn.net/?f=x%3D320)
Therefore the length of the tiger is 320 cm.