Answer:
1. Radius: 3 Diameter: 6 Circumference: 18.85 Area: 28.27
2. R: 6 D: 12 C: 37.7 A: 113.1
3. R: 9 D: 18 C: 56.55 A: 254.47
4. R: 2.4 D: 4.8 C: 15.08 A: 18.1
5. R: 3.5 D: 7 C: 21.99 A: 38.48
6. R: 7 D: 14 C: 43.98 A: 153.94
Step-by-step explanation:
Radius is half of diameter. Diameter is double radius. Circumference is 2 times pie times radius. Area is pie times radius squared.
First of all, the average speed is the ratio between the distance traveled and the time elapsed. So, the average speed of a car that travelled 720 kilometers in 6 hours is
![\dfrac{720}{6} = 120](https://tex.z-dn.net/?f=%5Cdfrac%7B720%7D%7B6%7D%20%3D%20120)
kilometers per hour.
As for the second exercise, you can simply write this proportion:
![220\div 2 = x\div 3](https://tex.z-dn.net/?f=220%5Cdiv%202%20%3D%20x%5Cdiv%203)
Because we expect the distance traveled in 3 hours to be proportional to the distance traveled in 2 hours, if the (average) speed is the same.
Solving for x, we have
![x = \dfrac{220\cdot 3}{2} = 110\cdot 3 = 330](https://tex.z-dn.net/?f=x%20%3D%20%5Cdfrac%7B220%5Ccdot%203%7D%7B2%7D%20%3D%20110%5Ccdot%203%20%3D%20330)
Omg why do we have to have 20 letters
true is the answer
D! if it’s 48 then the other side is 48 degrees, add that and it becomes 96. then subtract 180-96 and you get 84 <3
Answer:
Amaia walked 28 meters
Step-by-step explanation:
So first we know that the side x+3 is equal to the side 3x+1
subtract 1 and x from both sides to get x=1
then we plug in the 1 to the equation x+9 and we know that side equals 10, meaning the parallel side is also 10.
plug in 1 to one of the original equations to get 4
4+4+10+10=28