Answer:
0.002
Step-by-step explanation:
cuz
Answer:
d = 140 in
Step-by-step explanation:
Remember that d = 2r. If r = 70 in, then d = 140 in
Answer:
and ![y = 6](https://tex.z-dn.net/?f=y%20%3D%206)
Step-by-step explanation:
Given
![2x + 3y = 20](https://tex.z-dn.net/?f=2x%20%2B%203y%20%3D%2020)
![x + 5y = 31](https://tex.z-dn.net/?f=x%20%2B%205y%20%3D%2031)
Required
Solve for x and y
Make x the subject in the second equation
![x = 31 - 5y](https://tex.z-dn.net/?f=x%20%3D%2031%20-%205y)
Substitute 31 - 5y for x in ![2x + 3y = 20](https://tex.z-dn.net/?f=2x%20%2B%203y%20%3D%2020)
![2(31 - 5y) + 3y = 20](https://tex.z-dn.net/?f=2%2831%20-%205y%29%20%2B%203y%20%3D%2020)
![62 - 10y + 3y = 20](https://tex.z-dn.net/?f=62%20-%2010y%20%2B%203y%20%3D%2020)
![62 - 7y = 20](https://tex.z-dn.net/?f=62%20-%207y%20%20%3D%2020)
Collect like terms
![-7y = 20 - 62](https://tex.z-dn.net/?f=-7y%20%3D%2020%20-%2062)
![-7y = - 42](https://tex.z-dn.net/?f=-7y%20%3D%20-%2042)
Solve for y
![y = \frac{-42}{-7}](https://tex.z-dn.net/?f=y%20%3D%20%5Cfrac%7B-42%7D%7B-7%7D)
![y = 6](https://tex.z-dn.net/?f=y%20%3D%206)
Substitute 6 for y in ![x = 31 - 5y](https://tex.z-dn.net/?f=x%20%3D%2031%20-%205y)
![x = 31 - 5 * 6](https://tex.z-dn.net/?f=x%20%3D%2031%20-%205%20%2A%206)
![x = 31 - 30](https://tex.z-dn.net/?f=x%20%3D%2031%20-%2030)
![x = 1](https://tex.z-dn.net/?f=x%20%3D%201)
Answer:
d)14
Step-by-step explanation:
use Pythagoras
a² = b² ,+ c²
50² = 48² + c²
2500 - 2304 = c²
196 = c²
√196 = c
c=14
Answer:
3 3/4
Step-by-step explanation:
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