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jarptica [38.1K]
3 years ago
6

K2-4K-21. How do you factor this

Mathematics
1 answer:
alexira [117]3 years ago
4 0
Assuming yo mean
k²-4k-21

factor by doing
what 2 numbers multipily to get -21 and add to get -4?
-7 and 3

(k-7)(k+3) is factored
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Which factored form of 10x + 120x + 320 reveals all the zeros of the function it defines?
Readme [11.4K]

Answer:

b

Step-by-step explanation:

6 0
3 years ago
Add the product of (-16) and (-9) to the quotient of (-132) by 6.​
alukav5142 [94]
9*16-132/6=122...........
8 0
2 years ago
What is this plz help
Aliun [14]

Answer:

x ≤ 3

Step-by-step explanation:

Given

2(4 + 2x) ≥ 5x + 5 ← distribute parenthesis on left side

8 + 4x ≥ 5x + 5 ( subtract 4x from both sides )

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7 0
3 years ago
Find an equation, or a set of equations, to describe the set of points that are equidistant from the points p(−9, 0, 0) and q(3,
wariber [46]
X = -3.  
The distance from p(-9, 0, 0) is
 d = sqrt((x+9)^2 + y^2 + z^2) 
 The distance from q(3,0,0) is
 d = sqrt((x-3)^2 + y^2 + z^2) 
 Let's set them equal to each other.
 sqrt((x+9)^2 + y^2 + z^2) = sqrt((x-3)^2 + y^2 + z^2)
  Square both sides, then simplify
 (x+9)^2 + y^2 + z^2 = (x-3)^2 + y^2 + z^2
 x^2 + 18x + 81 + y^2 + z^2 = x^2 - 6x + 9 + y^2 + z^2
 18x + 81 = - 6x + 9
 24x + 81 = 9
 24x = -72
 x = -3 
 So the desired equation is x = -3 which defines a plane.
7 0
2 years ago
I need help explain “how to find” these probabilities, thanks a lot
USPshnik [31]

answer is attached below with full explanation

3 0
2 years ago
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