All categories

3 years ago

What is the length of one side of a cube that has a surface area of 2400 square mm?

Mathematics

1 answer:

stealth61 [152]3 years ago

4 0

Answer:

A)20.00mm

Step-by-step explanation:

since the cube has 6 faces divide it by 6.

= 2400 ÷ 6

=400

1 face = 400 area

since the surface of the cube is square and its area is 'side square'

find the square root of 400

which is 20 cm (side)

Also, I took the test and got it correct.

You might be interested in

How to calculate 9.1 plus 2.53

dlinn [17]

9.10
+2.53
————
11.63
Just add the rows from the top to the bottom

6 0

3 years ago

Find the sample size required to achieve the given margin of error with SD = 51.02 and z - score = 1.96. Round your answer to th

coldgirl [10]

Answer:

The sample size required is 2500.

Step-by-step explanation:

z-score:

In function of the margin of error M, the z-score is given by:

$Z = \frac{M}{\frac{\sigma}{\sqrt{n}}} = \frac{M\sqrt{n}}{\sigma}$

In this question, we have that:

$\sigma = 51.02, M = 2, Z = 1.96$

$Z = \frac{M\sqrt{n}}{\sigma}$

$1.96 = \frac{2\sqrt{n}}{51.02}$

$2\sqrt{n} = 51.02*1.96$

$\sqrt{n} = \frac{51.02*1.96}{2}$

$(\sqrt{n})^2 = (\frac{51.02*1.96}{2})^2$

$n = 2500$

The sample size required is 2500.

3 0

3 years ago

Helppppp pleSeeeeeeeee

Zepler [3.9K]

Answer: C

Step-by-step explanation: Hope this help :D

3 0

3 years ago

What is FC in the figure?

Harlamova29_29 [7]

FC is median..

Median is a line from a vertex that equally divides the opposite side...
here FC divides DB therefore it is a median.....

HOPE IT HELPS YOU '_'

8 0

3 years ago

Read 2 more answers

Which expression is equivalent to 4(3+5)-3.94?

Anna007 [38]

Answer:

$4(3 + 5) - 3.94 \\ 4 \times 8 - 3.94 \\ 32 - 3.94 \\ = 28.06$

3 0

3 years ago