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3 years ago

Given a ≠ ± b and (a^2-b^2) / (a+b)=12 find a-b.

Mathematics

1 answer:

grigory [225]3 years ago

5 0

Answer:

$\sqrt{12a \: + \: 12b \: - \: 2ab \: + \: 2b {}^{2} }$

Step-by-step explanation:

(a²-b²) / (a+b) = 12

a² - b² = 12(a+b)

(a-b)² + 2ab - 2b² = 12a + 12b

(a-b)² = 12a + 12b - 2ab + 2b²

a - b =

$\sqrt{12a \: + 12b \: - 2ab \: + \: 2b {}^{2} }$

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Name: Pres

iren2701 [21]

Answer:

9 and 3/8 left over

Step-by-step explanation:

to calculate this you have to convert the cups to eighths so:

8 cups*8= 64/8

1/4*2= 2/8

64/8+ 2/8= 66/8

66 divided by 7= 9 and 3/8

6 0

3 years ago

1. S = 10 mm V= S×S×S =___×___×___ =____ mm3

Minchanka [31]

Hi there!

»»————-　★　————-««

I believe your answer is:

$V=1000\text{mm}^3$

»»————-　★　————-««

Here’s why:

⸻⸻⸻⸻

I am assuming by the infomation given that the figure is a cube.

⸻⸻⸻⸻

$\boxed{\text{Finding the volume of the cube...}}\\\\S = 10mm; V= s^3\\--------------\\\rightarrow V = 10^3\\\\\rightarrow V = 10 * 10 * 10\\\\\rightarrow \boxed{V=1000\text{mm}^3}$

⸻⸻⸻⸻

»»————-　★　————-««

Hope this helps you. I apologize if it’s incorrect.

3 0

3 years ago

Given ABD =≈ CBD

vredina [299]

Answer:

AD BC only

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

What value of r makes the equation true?

Svet_ta [14]

R would have to be equal to 0.08 in order for it to be true.

7 0

3 years ago

The Nutty Professor sells cashews for $7.10 per pound and Brazil nuts for $4.60 per pound. How much of each type should be used

aivan3 [116]

Answer:

Pounds for cashew- 20.96

Pounds for Brazilian nut- 11.04

Step-by-step explanation:

Let c be the pounds of cashew

Let b ne the pound of Brazilian but

32×6.24

= 199.68

7.1c + 4.60b= 199.68.......equation 1

c + b= 32..........equation 2

From equation 2

c= 32-b

Sub 32-b for c in equation 1

7.1(32-b) + 4.60b= 199.68

227.3-7.1b+4.60b, = 199.68

227.3-2.5b= 199.68

-2.5b= 199.69-227.3

- 2.5b= -27.61

b= 27.61/2.5

b= 11.04

Sub 11.04 for b in equation 2

c+b= 32

c + 11.04= 32

c= 32-11.04

c= 20.96

4 0

3 years ago