Answer:
The LCM of 18 and 21 is 126.
3r = 10 + 5s, where r = 10
Substitute 10 for r.
3(10) = 10 + 5s
30 = 10 + 5s
Subtract 10 from each side.
20 = 5s
Divide by 5.
4 = s
Answer:
x = 10
Step-by-step explanation:
Subtract 5 from both sides:
2x + 5 = 25
2x = 20
Divide each side by 2
x = 10
Answer:
1 mile
Step-by-step explanation:
60 miles per hour
60 miles per 60 minutes
60 miles / 60 minutes
= 1 mile per minute
Answer:
Step-by-step explanation:
The square of an even number is an even .
The square of an odd number is an odd.
2826-even
7779-odd
30018-even
8204-even
