All categories

3 years ago

1. If length of one side of cube is 20 cm, then volume of cube must be:

Mathematics

2 answers:

Anarel [89]3 years ago

4 0

Answer:

1 b

2 c

Step-by-step explanation:

1) 20*20=400

400*20=8000

2)4*4*4=64

mina [271]3 years ago

4 0

Answer:

2. c. None of these

1. b. 8000 cm.³

Step-by-step explanation:

2. $whl = V \\ \\ whl = 64 \\ \\ \sqrt[3]{64} = 4$

Unfortunately, we do not have an answer choice of $4 cm.$ , so we leave it as "None of these".

1. $whl = V \\ \\ 8000 = {20}^{3}$

* All edges\sides of a square\square prism [cube] are congruent, so you take the cube root of 64 to get the length of each edge.

I am joyous to assist you anytime.

You might be interested in

Last month, you were able to purchase 8 computers. By the middle of the current month, you were able to purchase 8 more computer

Arada [10]

Answer:

125 %

Step-by-step explanation:

Computers purchased in the last month = 8

By the middle of the current month, 8 more computers than the last month were purchased. This means, total number of computers purchased by middle of current month = 8 + 8 = 16

Number of computers purchased by end of current month = 2

So,

Total computers purchased by current month = 16 + 2 = 18

We have to find the percentage increase in the number of computers from last month's purchases to the end of this month's purchases. The formula for percentage change is:

$\text{Percentage Change}=\frac{\text{New Value - Original Value}}{\text{Original Value}} \times 100\%$

Here, Original Value is the number of computers from last month and New Value is the number of computers from current month. Using the values in the formula, we get:

$\text{Percentage Change}=\frac{18-8}{8} \times 100\% = 125\%$

Thus, there was a 125% increase from last month's purchases to the end of this month's purchases

7 0

3 years ago

What is the estimated margin of error, using standard deviation?

OLEGan [10]

Find the mean ( average):
105 + 104 + 110 + 112 + 114 + 106 + 108 +109 = 868
Mean = 868 / 8 = 108.5

Standard deviation:
108.5 - 105 = 3.5, 3.5^2 = 12.25
108.5 - 104 = 4, 4^2 = 16
110 - 108.5 = 1.5, 1.5^2 = 2.25
112 - 108.5 = 3.5, 3.5^2 = 12.25
114 - 108.5 = 5.5, 5.5^2 = 30.25
108.5 - 106 = 2.5, 2.5^2 = 6.25
108.5 - 108 = 0.5, 0.5^2 = 0.25
109 - 108.5 = 0.5, 0.5^2 = 0.25

12.25 + 16 +2.25 + 12.25 + 30.25 +6.25+0.25+0.25 = 79.75
79.75/8 = 9.96875, SQRT(9.96875) = 3.1573

Standard Deviation = 3.1573

108.8 +/- 1.96 *(3.1573/sqrt(8) = 110.687 and 106.312

110.687 - 108.5 = 2.19
108.5 - 106.312 = 2.19

Margin of error = +/- 2.19

3 0

3 years ago

there are 50 people in a class out of this number 1/10 speak French only and 4/5 of the remainder speak both French and English

Flura [38]

Answer:

36 students speak both english and french

14 students speak only english

7 0

3 years ago

Read 2 more answers

Larry’s pet store made $30 before a pipe burst and he had to close early to get it fixed. He realized that he lost Three-fourths

LekaFEV [45]