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solniwko [45]
3 years ago
13

What is the area of the squares with sides (2x-3)feet?​

Mathematics
2 answers:
Damm [24]3 years ago
7 0

Answer:

= 4 {x}^{2}  - 12x + 9 {ft}^{2}  \\

Step-by-step explanation:

area =  {x}^{2}  \\  = (2x - 3)^{2}  \\  = (2x - 3)(2x - 3) \\  = 2x(2x - 3) - 3(2x - 3) \\  = 4 {x}^{2}  - 6x - 6x + 9 \\  = 4 {x}^{2}  - 12x + 9 {ft}^{2}

hope this helps

brainliest appreciated

good luck! have a nice day!

LUCKY_DIMON [66]3 years ago
5 0

Answer:

4x^2 -12x +9   ft^2

Step-by-step explanation:

The area of a square is

A = s^2 where s is the side length

A = (2x-3) ^2

A = (2x-3) (2x-3)

FOIL

first 2x*2x =4x^2

outer 2x (-3) = -6x

inner -3*2x = -6x

last -3*-3 = 9

Add them together

4x^2 -6x-6x +9

Combine like terms

4x^2 -12x +9

The area is 4x^2 -12x +9 ft^2

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ivolga24 [154]
The answer is 5/2
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Step-by-step explanation:

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2 years ago
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You need 112 K-cups for a party. A box of K-cups costs $16 for 36 K-cups. What is the minimum amount of money you will spend?
makkiz [27]

Answer:

$49.60

Step-by-step explanation:

The equation setup I used for this was as follows: $16 x (112/36)

Using PEMDAS, you'd start with the division part, 112/36. Although, I did this a bit differently, and being a bit further in school, I don't know if you go through this where you're at.

Start by factoring 112 into 4(28). This leaves you with 4(28)/36.

Next, cancel 4 out of 36. Since 4 is the common factor in 28 and 36, you cancel the four out of the equation, leaving you with 28/9. Convert this to its decimal form, 3.1.

Finally, take the 3.1 and multiply that by $16, which comes out to $49.60.

5 0
2 years ago
A cubed-shaped box has its side lengths decreased by 3 cm, when this happens, the volume decreases by 1385cm^3. What is the side
mixer [17]

Answer:

Step-by-step explanation:

let side of cube=x cm

volume=x³ cm³

again side=(x-3) cm

volume=(x-3)³ cm³

x³-(x-3)³=1385

(a³-b³)=(a-b)(a²+ab+b²)

(x-x+3){x²+x(x-3)+(x-3)²}=1385

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9x²-27x+27-1385=0

9x²-27x-1358=0

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3 0
3 years ago
Without multiplying, tell which product is larger and why.
Mademuasel [1]

Answer:

because 6 is larger then 4

Step-by-step explanation:

up

5 0
3 years ago
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