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Blizzard [7]
3 years ago
11

Which factoring method would be best to factor x^2 - 9?

Mathematics
1 answer:
Vinil7 [7]3 years ago
8 0

Answer:

  D.  difference of squares

Step-by-step explanation:

Both of the terms x^2 and 9 are squares, so their difference is the difference of squares. The factorization of that is a "special form" that can be usefully memorized.

  a^2 -b^2 = (a -b)(a +b)

  x^2 -9 = (x -3)(x +3)

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fenix001 [56]

Answer:

6.4

Step-by-step explanation:

a number rounded to the nearest tenth is

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since 3 is less than 5 we don't change the 4 to 5

6.4

7 0
3 years ago
You spin the spinner shown below once. The spinner has 4 equal sectors colored pink, purple, blue and green. What is p ( not pur
irakobra [83]

Answer:

It would be 0.75

Step-by-step explanation:

Probability=

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​

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7 0
3 years ago
This is probley easy...
Yakvenalex [24]

Answer:

6

Step-by-step explanation:

divide 450 and 75

4 0
3 years ago
Read 2 more answers
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Dima020 [189]

Answer:

7Q ^12

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6 0
3 years ago
What is the equation of the line that is paralle to y=3x-8 and passes thur the point (4,-5)
Brrunno [24]

⊰_________________________________________________________⊱

Answer:

  • The equation is-: y=3x

Step-by-step explanation:

\large\displaystyle\text{$\begin{gathered} \sf{Substitute \ the \ values \ into \ the \ formula \ y-y_1=m(x-x_1)} \\ \sf {parallel \ lines \ have \ same \ slopes, \ thus} \\ \sf{slope \ of \ the \ 2nd \ line = 3}\\ \sf{now \ substitute \ the \ values} \\ \sf {y-(-5)=3(x-4)}\\ \sf{y+5=3(x-4) (It's \ Point-Slope\;Form, \ see \ below \ for \ slope-intercept)}\\ \sf {y+5=3x-12} \\ \sf{y=3x-12-5} \\ \sf{y-3x-17} \end{gathered}$}}

\pmb{\tt{done \ !!}}

⊱_________________________________________________________⊰

4 0
2 years ago
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