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Pachacha [2.7K]
3 years ago
9

The perimeter of the rectangle is 20 cm. One side is 6 cm long. What is the length of the missing side

Mathematics
2 answers:
lbvjy [14]3 years ago
8 0

Answer:

it is 4cm long

Step-by-step explanation:

You multiply 6 by 2 to get 12, then subtract 12 from 20 and get 8. Then you divide 8 by 2 to get 4. If you want to check it, you can add 6+6+4+4 to get 20

11Alexandr11 [23.1K]3 years ago
7 0

Answer: 4

Step-by-step explanation: the definition of a rectangle states that opposite sides of the rectangle are congruent. this means that there is 2 sides that measure 6cm. These two sides added together give us 12cm. By working backwards, we can subtract 12cm from the perimeter (20cm), this gives us 8cm. by diving that by 2 we can find the lenght of the missing sides, 4cm each.

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Examine the diagram, and answer the question.
ELEN [110]

9514 1404 393

Answer:

  11.7

Step-by-step explanation:

GeoGebra can not only draw the picture, it can answer the question. The approximate distance between the points is about 11.7 units.

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The distance formula is used for this:

  d = √((x1 -x1)² +(y2 -y1)²)

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_____

Once you find that the distance is about √136, you know it is more than 11 (11² = 121) and less than 12 (12² = 144). The only answer choice that makes any sense is 11.7.

4 0
3 years ago
A random sample of size 36 is to be taken from a population that is normally distributed with mean 72 and standard deviation 6.
Flauer [41]

Answer:

The sampling distribution of the sample mean is approximately normal with mean 72 and standard deviation 1.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Normally distributed with mean 72 and standard deviation 6.

This means that \mu = 72, \sigma = 6

A random sample of size 36

This means that n = 36, s = \frac{6}{\sqrt{36}} = 1

The sampling distribution of the sample mean is

By the Central Limit Theorem, it is approximately normal with mean 72 and standard deviation 1.

5 0
3 years ago
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3 years ago
I need a story problem to match the equation 36÷5=7 Remainder 1
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Answer:

Ned had 36 apples but he needed to share them evenly to 5 friends. How many apples will each friend get?

Step-by-step explanation:I hope this helps

3 0
3 years ago
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The answer is 102 because you subtract 180-78.
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3 years ago
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