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mars1129 [50]
3 years ago
6

3) 6 cm 3 cm 12 cm 162cm2 108cm2 252cm2 216cm2what is the surface area?​

Mathematics
2 answers:
Phoenix [80]3 years ago
7 0

Answer:

252 cm^2

Step-by-step explanation:

SA = 2 ( lw+wh+hl)

where l is the length , h is the height and w is the width

SA = 2 ( 6*12+ 12*3 + 3*6)

SA = 2 (72+36+18)

SA = 2(126)

SA =252

atroni [7]3 years ago
6 0

Answer:

NOPE, the surface area is bigger than the volume, the answer must be C

Step-by-step explanation:

18+18+36+36+72+72 = 252

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Which is the graph of f(x) = (x + 3)(x - 2​
yanalaym [24]

Answer:

Step-by-step explanation:

f(x) = (x + 3)(x - 2​) has two zeros:  One stems from (x + 3) = 0 and is (-3, 0); the other stems from (x - 2) = 0 and is (2, 0).  

The axis of symmetry is a vertical line located halfway between -3 and 2:  

x =  -1/2.

The graph opens up because the given (x + 3)(x - 2) has a positive leading coefficient (+1).

With this information we can eliminate the last two possible answers.  Note that the x-intercepts of the first graph are -3 and 2,  Thus, the first graph is the correct one.

5 0
3 years ago
The coefficient of x^ky^n-k in the expansion of (x+y)^n equals (nk). True or false.
AVprozaik [17]

Answer:

The correct option is;

False

Step-by-step explanation:

The coefficient of x^k·y^(n-k) is nk,   False

The kth coefficient of the binomial expansion, (x + y)ⁿ is  \dbinom{n}{k} = \dfrac{n!}{k!\cdot (n-k)!} = C(n,k)

Where;

k = r - 1

r = The term in the series

For an example the expansion of (x + y)⁵, we have;

(x + y)⁵ = x⁵ + 5·x⁴·y + 10·x³·y² + 10·x²·y³ + 5·x·y⁴ + y⁵

The third term, (k = 3) coefficient is 10 while n×k = 3×5 = 15

Therefore, the coefficient of x^k·y^(n-k) for the expansion  (x + y)ⁿ = C(n,k) not nk

7 0
3 years ago
If Sam would like to see only the records that have a price that is more than ten and a profit that is more than three percent,
Misha Larkins [42]

Hello :)

I think this answer is third because you said "more than 10" and this is meaning :

>10

then you said "more than three percent" and this is meaning :

> %3

My answer is = > 10 and > 3%

Have a nice day :)

3 0
3 years ago
4. Why studying central tendency alone is insufficient and calculating dispersion is always needed in both descriptive and infer
ira [324]

Answer:

Check below for the answer and explanation.

Step-by-step explanation:

Studying the central tendency alone is not sufficient because apart from calculating the value of the central point of a group of data ( which is what the measure of central tendency does), it is important to also understand the spread of these data about the average(mean) value.The measure of dispersion will help us to know the range of error that is recorded in both descriptive and inferential statistics and this will enable the statistician to assess the validity of the data generated from the experiment performed.

A small value of standard deviation indicates that each of the values in the dataset is close to the average (mean) value.

4 0
3 years ago
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Anestetic [448]

Answer:

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3 years ago
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