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dexar [7]
3 years ago
8

Solve for x under the assumption that x < 0. Select the correct graph!

Mathematics
1 answer:
bixtya [17]3 years ago
7 0
X-5/x<4
times both sides by x
x²-5<4x
minus 4x both sides
x²-4x-5<0
factor
(x-5)(x+1)<0
hmm
special points at x=-1 and x=5
when x=-2, we get 10<0 which is false
when x=0, we get -5<0 which is true
when x=6, we get 7<0 which is false
so the solution must be the range between -1 and 5

so if x<0
whaat

just pick the 3rd grah


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Make a conjecture of what the x-intercepts of the function<br> f(x) = (2x - 1)(x + 3) will be.
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TI find x intercept/zero substitute

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swap the sides of the equation

(2x-1)x(x+3)=0

when the product of factors equals 0,at least one factor is zero

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solve the equation for x

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3 0
3 years ago
Salena, Justin, and Brandon were riding their bikes to the library after school. The library is 12 1/2 miles from school. Salena
faust18 [17]

Answer:

Salena's got to the library first

Step-by-step explanation:

12½ miles = 25/2 miles

2½ miles = 5/2 miles

5¾ miles = 23/4 miles

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Salena's time of arrival =

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25/2 ÷ 5/2. × 5

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25 minutes

Justin 's time of arrival=

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Brandon 's time of arrival=

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25/2 × 1/114×258

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113 minutes approximately

3 0
3 years ago
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