Answer:
khing chong
Step-by-step explanation:
The value/answer of r is a
It is just
19²+π=1,133.54
To solve this problem you must apply the following proccedure:
1. <span>You have a total of 21 coins, all nickels and dimes. Then:
x:nickels=5 cents
y: dimes=10 cents
x+y=21
2. You have that the total value is $1.70. Then:
5x+10y=170
3. The system of equation is:
x+y=21 (i)
5x+10y=170 (ii)
4. You have:
x+y=21
x=21-y
5(21-y)+10y=170
105-5y+10y=170
y=13 dimes
x+13=21
x=8 nickels</span>
Answer:9y-10y+1=-26
Step-by-step explanation:
Combine like terms and then keep your process going from there