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garri49 [273]
4 years ago
5

HELP!!!! WILL MARK!!!!

Mathematics
2 answers:
vaieri [72.5K]4 years ago
7 0
1. A~ 2r^2 + 15r-50

2. B~ k^2 - 4k+3
Bumek [7]4 years ago
6 0
(2r - 5)(r+10)
=2r^2 +20r -5r - 50
=2r^2 +15r  - 50
answer:
2r^2 +15r  - 50 (first choice)

(k-3)(k-1)
=k^2 - 3k - k + 3
=k^2 - 4k +3

answer 
k^2 - 4k +3 (second choice)

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Easy 100 points, plz answer ASP! Please include an explanation!!
valina [46]

Answer:

The third option

Step-by-step explanation:

the most reasonable

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3 years ago
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Write the standard equation of a circle with center (2, −5) and radius 16.
astra-53 [7]

The standard equation of circle when center is (h,k) and radius is 'r'

\left ( x - h \right )^{2} + \left ( y - k \right )^{2} = r^{2}

h = 2 and k = - 5, radius = 16

So equation of the circle is given by

\left ( x - 2 \right )^{2} + \left ( y - (-5) \right )^{2} = 16^{2}

\left ( x - 2 \right )^{2} + \left ( y + 5) \right )^{2} = 256

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3 years ago
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a manufacturer is designing a flashlight for the flashlight to admit a focused beam the bull needs to be on the central axis of
Helen [10]

Answer:

y= 1/12(x-0)^2+0

this answer works as an upward parabola

Step-by-step explanation:

  • The formula for a veritcal parabola is y=1/4p(x-h)^2+k
  • (h,k)= coordinates of the vertex of the parabola
  • p= absolute value of the distance from the vertex to the focus/directrix
  • In this problem, it is given that the vertex is at the origin (0,0) and the focus (the bulb), is 3 centimeters away from the vertex.
  • Now, you know the values of the variables. Fill in the values
  • FROM THE FORMULA: 1/4p turns into 1/12 since p is 3.
  • (x-h)^2+k turns into (x-0)^2+0, since h and k where the values of the vertex which was 0,0
  • once all the variables are given values (except x and y) you have made your equation!
  • The answer is y=1/12(x-0)^2+0

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8 0
3 years ago
Does anyone know this answer
pochemuha
Pls. see attachment. 

8 0
3 years ago
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The function h is defined by h(x)=4+3x over 5+x<br><br> Find h(4z)
Jobisdone [24]

Answer:

h(4z)=4+12z / 5+4z

Step-by-step explanation:

The function h is defined by h(x)=4+3x over 5+x

This can be written as

h(x)=4+3x / 5+x

The value of the function at any time depends on the value of x. x is the independent variable. The variable,x can take any value at any time.

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We will substitute 4z in the place of x in the function. This becomes

h(4z)=4+3×4z / 5+4z

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5 0
3 years ago
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