Two equations that have the solution 5:
3y = 2y + 5
2y - y = -3 + 8
To solve an equation is to isolate a variable and find its specific value.
10d+ 25q+5n= 805
D= n+8
Q= n+ 5
10d+ 25q+5n= 805
10(n+8)+25(n+5)+5n=805
10n+80+25n+125+5n=805
40n+205=805
40n=805-205
40n= 600
N=600/40
N= 15
D= n+8
D= 15+8
D= 23
Q=n+5
Q=15+5
Q=20
So 15 nickels ,23 dimes and 20quarters .
To check
15(0.05)= $0.75
23(0.10)=$2.30
20(0.25)=$5.00
Add it
5.00+2.30+0.75=8.05
7.30+.75=8.05
8.05=8.05
There are 3280 feet in a kilometer
Answer:
The 21st day
Step-by-step explanation:
If we mark the days, they will clash on the 21st day.
![3*7=21](https://tex.z-dn.net/?f=3%2A7%3D21)
Hope this helped. Have a nice day! Please mark brainliest!