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2 years ago

The area of the face of a cube is 9 square meters. what is the volume of the cuber

Mathematics

1 answer:

Helga [31]2 years ago

6 0

Answer:

Step-by-step explanation:

We know: All faces of a cube are squares.

The formula of an area of a square with a side s:

A = s²

We have A = 9m²

Substitute:

s² = 9 → s = √9 = 3 m.

The formula of a volume of a cube with an edge s:

V = s³

Substitute:

V = 3³ = 27 m³

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Share what you know about the properties of multiplication...!

3241004551 [841]

Answer:

- changing the order of the numbers we are multiplying, does not change the product

Step-by-step explanation:

7 x 8 x 11 x 2 = 11 x 7 x 2 x 8

1232 = 1232

Hope it helps!

3 0

2 years ago

MARKING AS BRAINLIEST!! (Geometry)

lana [24]

Answer:

x = 15.49

Step-by-step explanation:

As you can see this is a right-angled triangle due to the right angle symbol, we can use Pythagorean theory to find the unknown length:

$a^2 + b^2 = c^2$

In this case, we know C and B but not A so:

$a^2 = c^2 - b^2$

Now plug the values in:

$a^2 = 16^2 - 4^2$

$a^2 = 256 - 16$

$a^2 = 240$

Square root the answer to get A:

$a = \sqrt{240}$

a = 15.49

x = 15.49

Hope this helps!

5 0

2 years ago

A committee must be formed with 5 teachers and 4 students. If there are 6 teachers to choose from, and 15 students, how many dif

ZanzabumX [31]

Answer:

8190 ways

Step-by-step explanation:

Given

$Teachers = 6$

$Students = 15$

Selection

$Students = 4$

$Teachers = 5$

Required

Number of ways of selection

4 students can be selected from 15 students in:

$Students= ^{15}C_4$

Similarly.

5 teachers can be selected from 6 teachers in:

$Teachers= ^{6}C_5$

So, the required number of selection is:

$Selection = ^{15}C_4 * ^6C_5$

Apply combination formula:

$Selection = \frac{15!}{(15-4)!4!} * \frac{6!}{(6-5)!5!}$

$Selection = \frac{15!}{11!4!} * \frac{6!}{1!5!}$

$Selection = \frac{15*14*13*12*11!}{11!*4*3*2*1} * \frac{6*5!}{1*5!}$

$Selection = \frac{15*14*13*12}{4*3*2*1} * \frac{6}{1}$

$Selection = \frac{32760}{24} * 6$

$Selection = 1365 * 6$

$Selection = 8190$

8 0

2 years ago

If angle 6 is 25 degrees how much is 7

Sindrei [870]

Given:

Angle 6 = 25 degrees

To Find:

The value of Angle 7

Solution:

We know that,

the value of Angle 6 is equal to 25 Degrees

Since Angle 6 and Angle 7 together comprise of a Straight Line, this means that they are Supplementary Angles.

Therefore,

Angle 6 + Angle 7 = 180 degrees

This implies that,

25 degrees + Angle 7 = 180 degrees. (since Angle 6 = 25 Degrees)

Angle 7 = (180-25) degrees

Thus ,

Angle 7 = 155 degrees

Hence, Angle 7 is 155 degrees (Option 1)

5 0

1 year ago

Which expression is equivalent to 3x+2 ? A. x+x+x+1+1 B. x+x+1+1+1 C. 3x+6 D. 3+x+2

-Dominant- [34]

Answer:

Step-by-step explanation:

add all the xs together and it give you 3x and if tou combine the 1s it gives you two

3 0

2 years ago

Read 2 more answers