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lapo4ka [179]
2 years ago
15

Plz help. what is the simplified expression for ​

Mathematics
1 answer:
vlada-n [284]2 years ago
5 0

Answer:

3²

Step-by-step explanation:

3³x3³=3^6

3^6÷3^4=3²

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Which of these is NOT equivalent to 2^-3
Neporo4naja [7]
The question is asking which of the answer choices is NOT equivalent to
  2^-3 = 1/(2^3) = 1/8

You can determine this by expressing each of the answer choices in a manner that lets you compare them to 2^-3 or to 1/8.

A. -2^3 = -8 . . . . . this is not equivalent to 2^-3 or 1/8. This is the appropriate selection.

_____
Let's check the others, just to be sure.
B. 2(1/4)^2 = 2(1/16) = 2/16 = 1/8 . . . . is equivalent to 1/8

C. 2^2 × 2^-5 = 2^(2-5) = 2^-3 . . . . is equivalent to 2^-3

D. (1/2)^3 = 1/2^3 = 1/8 . . . . is equivalent to 1/8

Our choice of A is correct, as all these other choices are equivalent to the given expression.
3 0
3 years ago
Triangle ABC and triangle DEF are similar.
cestrela7 [59]

Answer:

x=25

Step-by-step explanation:

Since both triangles are similar, you can set them up as a proportional problem

x/20=32/(8+20+12) Solve for x, you can so cross multiply method.

32x=800

x=25

4 0
2 years ago
Pls hurry on a test
olga nikolaevna [1]

Answer:

B

Step-by-step explanation:

Meet at the middle of the two lines

4 0
2 years ago
Read 2 more answers
The graph represents the height y, in feet, above the ground of a golf ball x seconds after it is hit.
Pachacha [2.7K]
C I think because all of them add up to it so it would be 5seconds
7 0
2 years ago
Read 2 more answers
Find the value of x cubed minus 2x squared minus 7x + 5 of x=1/2-√3 ​
Svetach [21]

9514 1404 393

Answer:

  3

Step-by-step explanation:

For f(x) = x^3 -2x^2 -7x +5 and x=1/(2-√3), we have ...

  f(x) = ((x -2)x -7)x +5

and ...

  x = 1/(2-√3) = (2+√3)/(2^2 -3) = 2+√3

Then ...

  f(2+√3) = ((2 +√3 -2)(2 +√3) -7)(2 +√3) +5

  = (3+2√3 -7)(2+√3) +5

  = 2(√3 -2)(√3 +2) +5 = 2(3 -4) +5 = -2 +5

  f(1/(2 -√3)) = 3

_____

If you really mean x = (1/2) -√3, then f(x) = (42√3 -3)/8.

6 0
2 years ago
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