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tatiyna
3 years ago
15

A red light blinks every 12 seconds and a blue light blinks every 9 seconds. When will both lights blink at the same time?

Mathematics
1 answer:
mote1985 [20]3 years ago
3 0

Answer:

36

Step-by-step explanation:

We need to find the LCM of the two numbers because we need to know the lowest number that 12 and 9 are both in.

12 × 1 = 12

12 × 2 = 24

12 × 3 = 36

12 × 4 = 48

9 × 1 = 9

9 × 2 = 18

9 × 3 = 27

9 × 4 = 36

We can see that 36 is the lowest number that occurs both in 12 and 9 so the blue and red light will both link at 36 seconds

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Step-by-step explanation:

The answer is...

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7 0
3 years ago
In autumn a tree starts to shed its leaves. 2/5 of the leaves fall off in the first week. 1/2 of those remaining fall of in the
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Answer:

850 leaves were on the tree initially.

Same as;

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Step-by-step explanation:

2/5  wk 1 fall off

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3 years ago
Find the volume of the sphere whose radius is 0.8 cm
vekshin1

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2.14 cm^3

Step-by-step explanation:

V = 4/3 pi r^3

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8 0
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1 is the answer.

The exact answer is 1.03, but we have to round it to the nearest tenth which is 0 because 3 is less than 5.
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elena-s [515]

Answer: Velveeta

Step-by-step explanation:

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