Answer:
They will do rounds together again in 11 minutes and 40 seconds.
Step-by-step explanation:
Security A rounds every 2 minutes and 20 seconds in the gate 1.
That is, after 2*60 + 20 = 120 + 20 = 140 seconds.
Security B rounds every 1 minute and 40 seconds in the gate 2.
That is, after 1*60 + 40 = 60 + 40 = 100 seconds.
After how many minutes they will rounds together again?
First, we find this is seconds, which is the least common multiple between 140 and 100. Factoring them by prime factors:
140 - 100|2
70 - 50|2
35 - 25|5
7 - 5|5
7 - 1|7
1 - 1
lcm(140,100) = 2*2*5*5*7 = 700 seconds
They will do rounds together again in 700 seconds, which is 11 minutes and 40 seconds.
Answer:
B
Step-by-step explanation:
He asked me to make sure I had enough 20 words. But this question is really simple, Just move c to the right. And then change the symbol.
Answer:
1080
Step-by-step explanation:
You can add 60 18 times to get 1080 seconds. (60+)
I hope I helped (:
Answer:
Answer is B and C Triangles 1, 3 and 4 appear to be congruent
Answer:
27+63=90
9(3+7) is the same as 27+ 63
