Answer:
The number of observations is 15.
Answer:
the ANWER IS B
Step-by-step explanation:
It B BECAUSE I AM SMART
Answer:
50 nickels, 20 quarters.
Step-by-step explanation:
System of equations (q = # of quarters, n = # of nickels):
<em>q + n = 70, 0.25q + 0.05n = 7.50</em>
the first equation can be changed to q = 70 - n, so we are able to <em>substitute q with 70 - n</em>.
So, it will look like <em>0.25*70 - 0.25n + 0.05n = 7.50</em>. This can be simplified to <em>0.2n = 10</em>, which means that n = 50.
Knowing that we can solve <em>q + 50 = 70</em>, which means that q = 20.
Answer:
a=327 m=416
Step-by-step explanation:
subtract the numbers and add to make sure ur answer is correct
Answer:
2700!
Step-by-step explanation:
hope that helped <3
