Answer:
n = d+30 since he has 30 more nickels than dimes, to make them equal you have to add 30 to the dimes.
:
n+d = 150 substitute for n:
d+30+d = 150
2d = 120
d = 60 he has 60 dimes and 150-60 = 90 nickels
Answer:
a = 3
Step-by-step explanation:
First start writing out the binomial expansion of 
![[1^7] + [7C1 * 1^6 *(ax)] + [7C2*1^5*(ax)^2]+[7C3*1^4*(ax)^3]](https://tex.z-dn.net/?f=%5B1%5E7%5D%20%2B%20%5B7C1%20%2A%201%5E6%20%2A%28ax%29%5D%20%2B%20%5B7C2%2A1%5E5%2A%28ax%29%5E2%5D%2B%5B7C3%2A1%5E4%2A%28ax%29%5E3%5D)
as you can see from this, the last bracket will produce our 
term
Hope this helps, let me know if you have any questions :)
Answer:
Museum is at 7 blocks south and 5 blocks east to the Hotel
Step-by-step explanation:
| - - H
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Museum
Therefore, Museum is at 7 blocks south and 5 blocks east to the Hotel.
Answer:
All real numbers except 1
