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3 years ago

Solve the problem c=3.14d for d

Mathematics

1 answer:

Maksim231197 [3]3 years ago

3 0

Answer:

$c = 3.14d \\ d = \frac{c}{3.14}$

It's change of subject. :)

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What is the length of side AB?

soldi70 [24.7K]

Answer:

Step-by-step explanation:

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4 years ago

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How many different three-digit numbers can be written using digits from the set 5, 6, 7, 8, 9 without any repeating digits?

suter [353]

Answer: 60 different numbers can be formed

Step-by-step explanation:

Note that we have 5 different digits, and we must select 3 of them. They should not be repeated

The order of selection is important in this case, because the number 532 is not the same as the number 235.

So we have a permutations problem, where we have a set of n elements and we want to choose r from them.

Then we define the permutacion as:

$nPr=\frac{n!}{(n-r)!}$

In this case note that n=5 because there are 5 elements in the set.

r = 3 because we combine the elements to form three-digit numbers

Then:

$5P2=\frac{5!}{(5-3)!}$

$5P2=\frac{5!}{2!}$

$5P2=\frac{5*4*3*2!}{2!}$

$5P2=5*4*3$

$5P2=60$

4 0

3 years ago

I need help with the problem

Marizza181 [45]

The length is 15 metres,the width is 9 m,and the area is 135 m

Hope this will help u..

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4 years ago

What is the inequality in the picture?

Paul [167]

Answer:

The answer is y > 1/2x + 2

Step-by-step explanation:

To find the inequality of the graph:

Analyze line to noticed is dotted which means the sign can be greater than or less than. Then analyze the shaded part it is to the left meaning the sign used is >. We notice the y-intercept is 2 and the slope is 1/2. Create the equation to get y > 1/2x + 2. Hopefully this was very helpful! :)

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3 years ago

The number of swimmers at a city pool on Monday was twice the number who were there on Tuesday. The number at the pool on Wednes

Aneli [31]

Answer:

102 1/3 swimmers

Step-by-step explanation:

Let

Number of swimmers on Tuesday = x

Number of swimmers on Monday = 2x

Number of swimmers on Wednesday = 3x - 11

Total swimmers for all 3 days = 625

x + 2x + (3x - 11) = 625

3x + 3x - 11 = 625

6x = 625 - 11

6x = 614

x = 614 / 6

= 102 2/6

x = 102 1/3 swimmers

Number of swimmers on Tuesday = x = 102 1/3 swimmers

Number of swimmers on Monday = 2x

= 2(102 1/3)

= 204 2/3

Number of swimmers on Wednesday = 3x - 11

=3(102 1/3) - 11

= 307 - 11

= 296

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3 years ago