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3 years ago

13

3 by 3 cube is constructed of 27 blocks. How many blocks are needed to construct a cube with twice the dimensions of the origina

l cube?

1 answer:

Strike441 [17]3 years ago

5 0

"Twice the dimensions" means the length, width, and height
of the new cube are all 6.

To build that cube, you need (6 x 6 x 6) = 216 blocks.

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I need help solving this question

PSYCHO15rus [73]

6+_+7=
9+_-8=
9+_+3
11+_-17

5 0

2 years ago

Find the value of 373 using the identity (x − y)3 = x3 − 3x2y + 3xy2 − y3. Show all work.

Paladinen [302]

Answer:

$37^3 = 50653$

Step-by-step explanation:

Given

$(x - y)^3 = x^3 - 3x^2y + 3xy^2 - y^3$

Required

Find $37^3$

Express 37 as 40 - 3

So, we have:

$37^3 = (40 - 3)^3$

Compare to $(x -y)^3$

$x = 40\ and\ y = 3$

Substitute 40 for x and 3 for y in $(x - y)^3 = x^3 - 3x^2y + 3xy^2 - y^3$

$(40 - 3)^3 = 40^3 - 3*40^2*3 + 3*40*3^2 - 3^3$

Evaluate all exponents

$(40 - 3)^3 = 64000 - 3*1600*3 + 3*40*9 - 27$

Evaluate all products

$(40 - 3)^3 = 64000 - 14400 + 1080 - 27$

$(40 - 3)^3 = 50653$

Hence:

$37^3 = 50653$

7 0

2 years ago

If the ratio of wiping is the green peas is 2 to 8 and there are a total of 30 pens how many pens are white

kaheart [24]

2x+8x=30. x= #of pens

10x=30. combine like terms

x=3. divide by 10 to isolate (get by itself) x

2(3)=6. the # of white pens are represented by 2x

6 white pens

hope this helped!

8 0

2 years ago

An electronics store is having a 15% off sale. Suppose the sale price(p) of a laptop is $495. Which statement are true for this

valentina_108 [34]

Answer:

The answer to the Question is D

5 0

2 years ago

Read 2 more answers

HELP ME PLEASE<br> Solve for x: -6 – 5x = 29

Lynna [10]

Answer:

x = -7

Step-by-step explanation:

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

PEMDAS is the order of operations, and stands for:

Parenthesis

Exponents (&Roots)

Multiplications

Divisions

Additions

Subtractions

~

First, add 6 to both sides of the equation:

-5x - 6 = 29

-5x - 6 (+6) = 29 (+6)

-5x = 29 + 6

-5x = 35

Next, divide -5 from both sides of the equation:
(-5x)/-5 = (35)/-5

x = 35/-5

x = -7

-7 is your answer for x.

~

4 0

2 years ago