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Degger [83]
3 years ago
11

Use completing the square to solve for x in the equation (

Mathematics
1 answer:
kvv77 [185]3 years ago
4 0

Answer:

need the equation written correctly

124=l×w

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How to solve 4n²-3n-7=0
almond37 [142]
4n^2-3n-7=0\\ \\ a=4, \ \ b=-3 \ \ c=-7\\ \\ \Delta = b^{2}-4ac = (-3)^{2}-4*4* (-7)= 9+112=121

x_{1}=\frac{-b-\sqrt{\Delta }}{2a} =\frac{ 3-\sqrt{ 121}}{2*4}=\frac{ 3-11}{8}= \frac{-8 }{ 8}=-1 \\ \\x_{2}=\frac{-b+\sqrt{\Delta }}{2a} =\frac{ 3+\sqrt{ 121}}{2*4}=\frac{ 3+11}{8}= \frac{14 }{ 8}= \frac{7}{4}=1\frac{3}{4}


4 0
3 years ago
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Helpppppp. Pleaseeeeeeeeeeee
Irina-Kira [14]
I think it’s 0.85d, but i’m not sure
7 0
3 years ago
Pls help me if your good at math
OLEGan [10]

Answer:

First bank last function

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Third blank, middle function

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7 0
2 years ago
a gymnasium is 88 feet long and 76 wide on a blueprint the gymnasium is 5.5 inches long what is the width of the gymnasium on th
attashe74 [19]

First we would need to find the portion of the gymnasium to the blueprint to do that please do this:

88/5.5 = 16

The length divided by the blueprint's length

Since we know that the gymnasium is 16 times the blueprint, to find the width divide 16 to 76:

76/16 = 4.75

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The width of the blueprint is 4.75 inches

6 0
3 years ago
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What model describes the relationship between miles driven and the total cost of a rental car when you pay $50.00 per day and $0
Alex_Xolod [135]
This is a linear equation with y-intercept $50 and slope $0.25/mile:

TC = $50 + ($0.25)x, where x is the number of miles driven.

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