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san4es73 [151]
3 years ago
15

To which set or sets below does the number -7/8 belongs to ?

Mathematics
1 answer:
adoni [48]3 years ago
8 0

Answer:

-7/8

Step-by-step explanation:

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Q =3x2+5x-2 R = 2 – x2 S = 2x + 5 Find Q – [R + S] Show all of the steps.
matrenka [14]

Q=3x^2+5x-2\\R=2-x^2\\S=2x+5\\\\Q-[R+S]=(3x^2+5x-2)-[(2-x^2)+(2x+5)]\\\\=(3x^2+5x-2)-(2-x^2+2x+5)\\\\=(3x^2+5x-2)-[-x^2+2x+(2+5)]\\\\=(3x^2+5x-2)-(-x^2+2x+7)\\\\=3x^2+5x-2-(-x^2)-2x-7\\\\=3x^2+5x-2+x^2-2x-7\\\\=(3x^2+x^2)+(5x-2x)+(-2-7)\\\\=\boxed{4x^2+3x-9}

5 0
3 years ago
An entry level PR specialist's annual pay is $46,124
Neporo4naja [7]

Answer:

  $1,774

Step-by-step explanation:

The decrease is 2 weeks out of 52, or 1/26 of the annual pay:

  decrease = (1/26)($46,124) = $1,774

The PR specialist should expect his annual pay to decrease by $1774.

4 0
3 years ago
What is the x, y, and z for this question?
Monica [59]

Answer:

x= -2

y=0

z= 1

Step-by-step explanation:

{-x+5y-10z=-8

2x-y+10z=6}

{2x-y+10z=6

-7x-3y-10y=4}

{-x+5y-10z=-8

2x-y+10z=6} = x+4y=-2

{2x-y+10z=6

-7x-3y-10y=4} = -5x-4y=10

{x+4y=-2

-5x-4y=-10}. =. y= 0 x= -2

substitute x and y in -x+5y-10z=-8

-(-2)+5(0)-10z=-8

solve for z

z= 1

(x,y,z) = (-2,0,1)

hope this helps

4 0
3 years ago
Factor the four-term polynomial by grouping 3x-3+x^3-4x^2
yaroslaw [1]
(x4−3x3+4x2−8)/(x+1) = x3−4x2<span>+8x−8.</span>
6 0
4 years ago
Write an equation in slope-intercept form for the line that passes through (5,1) and is parallel to the line described by y=−25x
vodka [1.7K]

Answer:

Step-by-step explanation:

y - 1 = -25(x - 5)

y - 1 = -25x + 125

y = -25x + 126

8 0
3 years ago
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