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seraphim [82]
3 years ago
7

use the graph f(x)=-x^2+8x+20 to determine the values of m for which m= -x^2+8x+m=0 will have two positive roots​

Mathematics
1 answer:
aev [14]3 years ago
6 0

Answer:

first root -2 and the second is 10

Step-by-step explanation:

delta=b squared-4ac=64-4(-1)(20)=144>0

then we have 2 +roots

x1= -b+ radical delta/2a =-2

x2=-b - radical delta/2a=10

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Y =7 -3x is it linear or non linear?
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Subtracting the left side, we have

... 2(8 -y) -z +5(x -2) = 0

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... 5x -2y -z +6 = 0 . . . . . general form

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3 years ago
What is the number of the parking space covered by the car?
svet-max [94.6K]

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Step-by-step explanation:

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4 years ago
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Kerry has 85 plastic bracelets to put in party favor bags for seven guess she puts the same number of bracelets and each bag she
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8 0
3 years ago
A certain stock starts the day at $273/8 per share. If it drops $21/2 during the day, what is its closing value? A. $247/8 B. $2
Elza [17]

Answer:

A. $ 24 7/8

Step-by-step explanation:

GIVEN: A stock starts the day at $27 3/8 per share.

             Share drops $2 1/2 during the day.

To Find : Closing value

Solution : first we need to find how many 1/8 are there in 1/2

So, \frac{\frac{1}{2} }{\frac{1}{8} } =4

when share drops by $2 then  share will be :

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and \frac{3}{8} - 4(\frac{1}{8})


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So, 25-\frac{1}{8}


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So, its closing value is 24\frac{7}{8}.

7 0
4 years ago
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