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3 years ago

Find the GCF of 84 and 56

Mathematics

2 answers:

Gala2k [10]3 years ago

5 0

Answer:

GCF of 56 and 84 is 28.

Step-by-step explanation:

Hope this helps!! :)

Arlecino [84]3 years ago

3 0

Factors of 58: 1, 2, 4, 7, 8, 14, 28, 56
Factors of 84: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
The greatest common factor of 84 and 56 is 28.

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4 years ago

What is the cost of 109 marbles if each cost 4 cents

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3 years ago

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In an orchestra, there are 42 woodwind players to 56 brass is ratio of woodwinds to brass written as a fraction in simplest form

Marrrta [24]

$\frac{42}{56} = \frac{6}{8} = \frac{3}{4}$

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3 years ago

In how many ways can 4 light bulbs be selected from a batch of 43 lights bulbs to be tested for defects? Assume no light bulb wi

lesantik [10]

Answer:

There are 123,410 ways

Step-by-step explanation:

The number of ways or combinations in which we can select k elements from a group of n elements is given by:

$\frac{n!}{k!(n-k)!}$

In this case, we can replace n by 43 and k by 4, because we are going to select 4 light bulbs from a batch of 43 light bulbs.

So, the number of combinations is calculated as:

$\frac{43!}{4!(43-4)!}=123,140$

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4 years ago

The highway speeds of 100 cars are summarized in the frequency distribution below. Find the mean speed. Speed (MPH) Cars 30-39 5

Alexus [3.1K]

The mean speed of the 100 cars is 55.4

<h3>How to determine the mean?</h3>

The table of values is given as:

Speed (MPH) Cars

30-39 5

40-49 18

50-59 50

60-69 17

70-79 10

Rewrite the frequency table to include the class midpoints

x f

34.5 5

44.5 18

54.5 50

64.5 17

74.5 10

The mean speed is then calculated as:

$\bar x =\frac{\sum fx}{\sum f}$

So, we have:

$\bar x = \frac{34.5 * 5 + 44.5 * 18 + 54.5 * 50 + 64.5 * 17 + 74.5 * 10}{100}$

Evaluate

$\bar x = 55.4$

Hence, the mean speed is 55.4