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larisa86 [58]
2 years ago
9

Find the surface area of this right triangle

Mathematics
2 answers:
Marizza181 [45]2 years ago
8 0

Answer:

144 square centimeters

Step-by-step explanation:

So the first triangle, which is on the side. We do 3 x 4, which is 12. We would normally divide it by 2 since it is a triangle, but since there is 2 triangles that are the same, we keep it 12. Next, we have the bottom rectangle. We do 4 x 11, which is 44. Next we do the top rectangle, 5 x 11, which is 55. Next we do the side rectangle, 3 x 11, which is 33.

Next we add all of these answers together!

12 + 44 = 56

56 + 55 = 111

111 + 33 = 144

ANSWER: 144 square cm

lubasha [3.4K]2 years ago
7 0
144 square CM hope this helps
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If you have 66 data observations in a sample, how many classes (bins) does the sturges' rule recommend for you to construct a fr
Iteru [2.4K]

According to Sturge's rule, number of classes or bins recommended to construct a frequency distribution is k ≈ 7

Sturge's Rule: There are no hard and fast guidelines for the size of a class interval or bin when building a frequency distribution table. However, Sturge's rule offers advice on how many intervals one can make if one is genuinely unable to choose a class width. Sturge's rule advises that the class interval number be for a set of n observations.

Given,

n = 66

We know that,

According to Sturge's rule, the optimal number of class intervals can be determined by using the equation:

k=1+log_{2} n

Here, n is equal to 66 and by substituting the value to the equation we get:

k=1+log_{2} (66)

k = 7.0444

k ≈ 7

Learn more about Sturge's rule here: brainly.com/question/28184369

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8 0
1 year ago
I NEED HELPPP WITH THISSS
goblinko [34]

Answer:

\boxed{\boxed{\sf (-20) }}

given - X = (-8).

  • Y = 7
  • Z = (-11)

To find - Value of this equation

Solution-

(-13) -Y

putting the value of y = 7 in the equation

(-13) -7

-20

3 0
2 years ago
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yuradex [85]
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3 years ago
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Jet001 [13]

Answer:

It just means that it is not equal to each other so the equation is false.

Step-by-step explanation:

The equal sign with a line through it means that they aren't the same. -12 is a different number from 12 so they can't end up being the same in the end of the equation.

Hope this helps!

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Answer:

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Step-by-step explanation:

The mode is the value that appears most frequently in a data set. A set of data may have one mode, more than one mode, or no mode at all. ... The mode can be the same value as the mean and/or median, but this is usually not the case

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