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Sever21 [200]
3 years ago
14

3x-x-5=2(x+2)-9 what is the answer to x

Mathematics
1 answer:
Eddi Din [679]3 years ago
7 0

Answer:

(-infinity, infinity) or all real numbers

Step-by-step explanation:

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230 calories in a 48 g packet ñ how many calories in a9.6g bag
Elden [556K]

Answer:

46

Step-by-step explanation:

230 divided by 5

3 0
2 years ago
Which expression has both 8 and n as factors?<br><br> 8 / n 8 + n 8n 8 - n
Sidana [21]

Answer:

8n

Step-by-step explanation:

3 0
2 years ago
the volume of a cube is increasing at a constant rate of 824 cubic centimeters per minute. At the instant when the volume of the
Maurinko [17]

Answer:

DA/dt  = 75.27 cm²

Step-by-step explanation:

Cube Volume    =   V(c)   =  683  cm³

DV(c) /dt    =  824 cm³

V(c,x) = x³    

Then

DV(c,x)/ dt   =  3x² Dx/dt

( DV(c,x)/ dt )/ 3x²  =  Dx/dt       (1)

Now  as  V(c,x) = x³    when    V(c,x)  =  683 cm³     x = ∛683

x  =  8.806     ( from excel)

And by subtitution of this value in equation (1)

Dx/dt   =  ( DV(c,x)/ dt )/ 3x²   ⇒  Dx/dt  =  824 / 3*x²

  Dx/dt   = 824 /3*77.55

Dx/dt   =  824/232,64

Dx/dt   = 3,542

Then we got  Dx/dt  where x is cube edge. The area of the face is x² then

the rate of change of the suface area is  

DA/dt  = ( Dx/dt )²*6         ( 6 faces of a cube)

DA/dt  = (3.542)²*6

DA/dt  = 75.27 cm²

6 0
2 years ago
Can someone please help!
Fudgin [204]

Answer:

min f(x) = 3.95  (for x= 2.5)

Step-by-step explanation:

vertex (x) = 1/0,4 = 2,5

vertex (y) = 0.2(2.5)^2-2.5+5.2 = 3.95

3 0
2 years ago
Question 2<br> Answer<br><br> Solve
Lelu [443]

<u>Answer:</u>

  • Option B is correct.

<u>Step-by-step explanation:</u>

<u>To subtract fractions, we must check if the denominators of both fractions are the same.</u>

  • 2/5 - 1/7
  • => 2 x 7/5 x 7 - 1 x 5/7 x 5
  • => 14/35 - 5/35

<u>Now, let's subtract for the result.</u>

  • => 9/35

Hence, <u>Option B is correct.</u>

Hoped this helped.

BrainiacUser1357

8 0
2 years ago
Read 2 more answers
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