Answer:
B
Step-by-step explanation:
I added all of then and then subtracted 47 from the 50.
Calculate the circumference of the two semi circles, which equals a full circle. Then add the two sides of the track.
Circumference is pi x diameter = 3.14 x 22.8 = 71.592, so, you would need to add 71.592 + 49.2 + 49.2 = 169.992 meters, and that would be the length of one lap of the track.
Answer:
The solution for y = -1.
Step-by-step explanation:
Given:
....(1)
....(2)
So, to solve for y, first we solve for x in equation (2):
![2x-4y=12](https://tex.z-dn.net/?f=2x-4y%3D12)
⇒![2x=12+4y](https://tex.z-dn.net/?f=2x%3D12%2B4y)
Dividing both sides by 2,
⇒
Now, substituting the value of x in equation (1):
![2x+7y=1](https://tex.z-dn.net/?f=2x%2B7y%3D1)
⇒![2(6+2y)+7y=1](https://tex.z-dn.net/?f=2%286%2B2y%29%2B7y%3D1)
⇒![12+4y+7y=1](https://tex.z-dn.net/?f=12%2B4y%2B7y%3D1)
⇒![12+11y=1](https://tex.z-dn.net/?f=12%2B11y%3D1)
⇒![11y=1-12](https://tex.z-dn.net/?f=11y%3D1-12)
⇒![11y=-11](https://tex.z-dn.net/?f=11y%3D-11)
Dividing both sides by 11,
⇒![y=-1](https://tex.z-dn.net/?f=y%3D-1)
Therefore, the solution for y = -1.
1.)-2
2)-2
3.)-3
4.)-1
5)1
6.)-6
7.)-6
8.)4
9.)0
10.)no solution
11.)-3
12.)all real numbers
13.)-1
14.)5
On working on the work for the first problem so u understand
Answer:
1681
Step-by-step explanation:
41 × 41 = 1681
hope this helps