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3 years ago

What is the surface area of the cube below

Mathematics

1 answer:

const2013 [10]3 years ago

4 0

Answer:

Option D is correct

Surface area of a cube is 294 square units

Step-by-step explanation:

Surface area of a cube is given by:

$S = 6a^2$ square unit

where

S is the surface area of a cube

a is the length of edge of a cube.

From the given figure, we have;

a = 7 units

then;

$S = 6(7)^2 = 6(49) = 294$ square units

Therefore, the Surface area of a cube is 294 square units

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If Anna gives Me half of her pumpkins and Coral half of whats left and she ends with 6 how many pumpkins did she start with?

Gwar [14]

X- the number of pumpkin she had initially
she gave you x/2
x-x/2=x/2
(x/2)/2=x/4(she gave Coral)
x/2-x/4=x/4
x/4=6
x=24

6 0

3 years ago

Read 2 more answers

Find the domain for each expression:

Fiesta28 [93]

1. X<0 or x>0
2. X<0 or x>0
3. X<0 or x>0
4. X<0 or x>0
5. X<2 or x>2

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2 years ago

Complete parts (a) and (b) below.

jeka94

Answer:

a) The mean of the probability distribution = 0.6

b) The variance of the probability distribution = 0.3

c) The standard deviation of the probability distribution = 0.5

Step-by-step explanation:

a) Data and Calculations:

number of dogs per household in a small town

Dogs Probability Expected Mean Diff Mean Diff.

Value Squared

0 0.650 0 -0.569 0.32376

1 0.216 0.216 -0.353 0.12461

2 0.087 0.174 -0.395 0.15603

3 0.026 0.078 -0.491 0.24108

4 0.014 0.056 -0.513 0.26317

5 0.009 0.045 -0.524 0.27458

The mean = 0.569 (Sum of expected value)

Variance = mean of squared differences = 0.27665 (1.38323/5)

Standard deviation = square root of variance = 0.526 = 0.5

7 0

3 years ago

Arthur is treating his friends to a meal at Chez rich. The meals add up to $136.45. If he tips the waiter 15% what is the amount

Ulleksa [173]

Basically you need to find what 15% of 136.45 is. You do this by changing the percent to a decimal, so 15% would be .15. Following this, you would multiply 136.45*.15. This will give your answer.

3 0

4 years ago

The data below are times (in seconds) recorded when statistics students participated in an experiment to test their ability to d

RoseWind [281]

Answer:

Mean = 58.25

Median = 57.5

Mode = 49

Step-by-step explanation:

We are given the following data set:

55, 51, 74, 61, 67, 60, 49, 49

Formula:

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{466}{8} = 58.25$

Sorted data:

49, 49, 51, 55, 60, 61, 67, 74

Mode is the entry with highest frequency.

49 appeared two times.

Mode = 49

Formula:

$Median:\\\text{If n is odd, then}\\\\Median = \displaystyle\frac{n+1}{2}th ~term \\\\\text{If n is even, then}\\\\Median = \displaystyle\frac{\frac{n}{2}th~term + (\frac{n}{2}+1)th~term}{2}$

$\text{Median} = \dfrac{55+60}{2} = 57.5$

All these are less than 60 seconds, which indicates that students perceive 1 minute to pass sooner than it actually has.

8 0

3 years ago