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2 years ago

How do we find the factors of x2 – 64

Mathematics

1 answer:

sweet-ann [11.9K]2 years ago

8 0

Answer:

The factors of x²-64 is equal to (x-8)(x+8).

Step-by-step explanation:

The given expression is:

x²-64

we know that, 8² = 64

So,

(x²-8²) = (x-8)(x+8) [As (a-b)(a+b) = a²-b²]

So, the factors of x²-64 i equal to (x-8)(x+8).

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A rectangle with an area of x2 - 4x – 12 square units is

tino4ka555 [31]

Hello there! :)

Answer:

First choice, (x + 2) and (x - 6).

Step-by-step explanation:

To solve for the dimensions, recall that the formula for the volume of a rectangle is:

A = l × w

Simply factor x² -4 - 12. Find two numbers that add up to -4 and multiply into -12.

2, -6 satisfy these conditions. Use these numbers to write this equation in factored form:

(x + 2) (x - 6). Thus, the first option is the correct answer.

5 0

2 years ago

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Miss larner had a bowl of jolly ranchers sitting on her desk. One day sean decided to grab a handful of the candies and took 1/3

soldier1979 [14.2K]

Answer: 36 candies were in the bowl when the day started

Step-by-step explanation:

Let x represent the number of candies in the bowl initially.

One day sean decided to grab a handful of the candies and took 1/3 of the candies. This means that Sean took x/3 candies. Number of candies left would be x - x/3 = 2x/3.

Since he decided to return 4 of them, the remaining number of candies would be

2x/3 + 4 = (2x + 12)/3

Tracy also helped herself and took 1/4 of the candies in the bowl. This means that she took

1/4(2x + 12)/3 = (2x + 12)/12

The number of candies left would be (2x + 12)/3 - (2x + 12)/12

= 4(2x + 12) - (2x + 12)/12 = (8x + 48 - 2x - 12)/12 = (10x - 36)/12

Since she put down 3, the number remaining would be

(10x - 36)/12 + 3 = (10x - 36 + 36)/12 = 10x/12

Eugene grabbed 1/2 of the candies in the bowl. This means that he took

1/2 × (10x)/12 = (10x)/24

The amount remaining is

(10x)/12 - (10x)/24 = [2(10x) - 10x)]/24

= [20x - 10x]/24 = 10x/24

He put those two back. It means that amount left would be

(10x)/24 + 2

At the end of the day, there are 17 candies left. This means that

10x/24 + 2 = 17

10x/24 = 17 - 2 = 15

10x = 24×15 = 360

x = 360/10 = 36

4 0

2 years ago

Worldwide, 1 in 5 adults cannot read or write and of them are women.

timofeeve [1]

<span>Actually in this whole world the major ill-literates are definitely women from many decades for sure, The main reason being most of them women where made or treated to be like that by our society any where any place in this world ie, just for giving birth to kids and looking after them and also the house chores, which was or is one of the main reason 1 in 5 adults cannot read or write where most of them are women, but now in the modern technology generation its slowly changing and equality will surely come in the next future.</span>

4 0

3 years ago

ILL PUT YOU AS BRAINLIEST!!!!!! please !

Jet001 [13]

The volume of each of The buckets is:
V1 = pi * r ^ 2 * h
Where,
r: radio
h: height
Substituting values we have:
V1 = 3.14 * (5/12) ^ 2 * (25/12)
V1 = 1.14 feet ^ 3
The volume of the warehouse is:
V2 = (100) * (50) * (20)
V2 = 100000 feet ^ 3
Then, the number of buckets of rocks she could store in a warehouse is:
N = (V2) / (V1)
N = 100000 / 1.14
N = 87719
Answer:
the number of buckets of rocks she could store in a warehouse is:
N = 87719

6 0

2 years ago

Does the number 404,500 have 6 significant figures?

Anestetic [448]

Answer:

It has 4 significant figures, not 6

Step-by-step explanation:

4045 are the significant figures here

6 0

3 years ago

Read 2 more answers