Mr. Sonny's science class is calculating the average number of blinks per minute. Jan blinks 126 times in 7 minutes. What is her

Question

Tresset [83]

2 years ago

10

Mr. Sonny's science class is calculating the average number of blinks per minute. Jan blinks 126 times in 7 minutes. What is her

blinking rate, in blinks per minute?

Mathematics

2 answers:

vlabodo [156] · Answer 1 · 2022-09-13T00:09:54+03:00

vlabodo [156]2 years ago

3 0

18 blinks per min since 126 divided by 7 equals 18

const2013 [10] · Answer 2 · 2022-09-13T01:10:38+03:00

Answer:
b. Every 24 minutes
Step-by-step explanation:
A neon sign blinks every 6 minutes, and another sign blinks every 8 minutes.
The first step is to:
Find and list multiples of each time each neon sign blinks.
This means, we find the Multiples of 6 and 8
Multiples of 6:
6, 12, 18, 24, 30, 36
Multiples of 8:
8, 16, 24, 32, 40
The first and common multiple of 6 and 8.
Therefore, the Least common multiple [LCM(6, 8) ] = 24
Hence, they often blink at the same time every 24 minutes.
Therefore, option b.Every 24 minutes is correct.