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SOVA2 [1]
3 years ago
6

A light flashes every two minutes a second light flashes every 3.5 minutes and a third light flashes every four minutes if all t

hree lights flash together at 8 PM what is the next time of the day they were all flash together
Mathematics
2 answers:
Bezzdna [24]3 years ago
6 0
The answer should be 8:28 pm
Diano4ka-milaya [45]3 years ago
6 0

Multiples of 2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28

Multiples of 3.5: 3.5, 7, 10.5, 14, 17.5, 21, 24.5, 28

Multiples of 4: 4, 8, 12, 16, 20, 24, 28

The least common multiple of the 3 numbers is 28, so the lights will flash at the same time every 28 minutes.

The time will be 8:28 PM

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Step-by-step explanation:

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Find the area of the parallelogram that has a base of 4m and a height of 5.5m.
Sveta_85 [38]

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22m²

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Clodagh and Eva went school supply shopping together. Clodagh bought 3 packs of pencils and 5 notebooks for a total of $18. Eva
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Answer:

each notebook costs $2.70

each pack of pencils costs $1.50

Step-by-step explanation:

system of equations:

let p = pack of pencils

let n = notebook

3p + 5n = 18

4p + 4n = 16.8

I used the elimination method by multiplying the first equation by 4 and the second equation by -3

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4 0
3 years ago
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