All categories

3 years ago

Please i need this asap!!

Mathematics

1 answer:

Marianna [84]3 years ago

7 0

There are four triangular faces, so we do 4*1/2*8*8

There are four rectangular faces that have the dimension 8*13, so we do 4*8*13

There is one square face that has the dimension 8*8

So we do 8*8+4*1/2*8*8+4*8*13

Which is 608

You might be interested in

Please help!! thank you.

Zina [86]

(A) Product of $-2x^{3}+x-5$ and $x^{3}-3x-4$ is:

$(-2x^{3}+x-5)(x^{3}-3x-4)$

$=-2x^{3}(x^{3}-3x-4)+x(x^{3}-3x-4)-5(x^{3}-3x-4)$

$=(-2x^{3})(x^{3})+(-2x^{3})(-3x)+(-2x^{3})(-4)+x(x^{3})+(x)(-3x)+(x)(-4)+(-5)(x^{3})+(-5)(-3x)+(-5)(-4)$

$=-2x^{6}+6x^{4}+8x^{3}+x^{4}-3x^{2}-4x-5x^{3}+15x+20$

$=-2x^{6}+6x^{4}+x^{4}+ 8x^{3}-5x^{3}-3x^{2}-4x+15x+20$

$=-2x^{6}+7x^{4}+3x^{3}-3x^{2}+11x+20$

(B) Yes.

Product of $-2x^{3}+x-5$ and $x^{3}-3x-4$ = Product of $x^{3}-3x-4$ and $-2x^{3}+x-5$ because multiplication is commutative.

Commutative Property of multiplication says that a.b = b.a.

Thus, multiplication is same irrespective of the order of two numbers.

5 0

4 years ago

What is 0.0008235 in scientific notation

larisa [96]

I think this is the Answer

8.235*10^-4

7 0

4 years ago

Help me plz i have 3 question 30 points

Vlad1618 [11]

Here're the answers!!! Good luck!!
1) a = -7 (The first picture -Left to right)
2) x = -39
3) a = -2.1 (The last picture left to right)

Hoping this helped you out!! If my answer best helped you, please mark Brainliest! ;)

3 0

4 years ago

What is greater than 1 cup

77julia77 [94]

2 cups your welcome

5 0

4 years ago

What is the square root of 2x equals 8

Fiesta28 [93]

2x = 8 ... therefore x = 4
4^2 = 16

8 0

3 years ago