Please help me answer this

Mathematics

2 answers:

lions [1.4K]3 years ago

8 0

I believe it is 4 to 12
4 being the black portion and 12 being the white

laiz [17]3 years ago

6 0

8 half’s = 4
There are 16 total squares
16 - 4 = 12
4/12 = 1/3

1:3
1 Black for every 3 white

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2 years ago

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3 years ago

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Nutka1998 [239]

Answer:

25 seconds

Step-by-step explanation:

Hi there!

In order to answer this question, first we need to know how many bolts per second are produced by each machine, this can be known by dividing the number of bolts by the time it takes.

For machine A:

$A = \frac{120 bolts}{40 s}= 3 \frac{bolts}{s}$