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allsm [11]
3 years ago
11

Solve the equation for x.​

Mathematics
1 answer:
yarga [219]3 years ago
6 0

Answer:

-90

Step-by-step explanation:

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Answer:B

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Y = -17.5x + 2.7x + 14.1 - 11.9x
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Answer:

y=-26.7x+14.1

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Step-by-step explanation:

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Which two values of X are roots of the polynomial below 4x^2-6x+1
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4x^2-6x+1=0\\\\a=4,\ b=-6,\ c=1\\\\\Delta=b^2-4ac\\\\\Delta=(-6)^2-4(4)(1)=36-16=20\\\\\sqrt\Delta=\sqrt{20}=\sqrt{4\cdot5}=\sqrt4\cdot\sqrt5=2\sqrt5\\\\x_1=\dfrac{-b-\sqrt\Delta}{2a},\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\x_1=\dfrac{-(-6)-2\sqrt5}{2\cdot4}=\dfrac{3-\sqrt5}{4}\\\\x_2=\dfrac{-(-6)+2\sqrt5}{2\cdot4}=\dfrac{3+\sqrt5}{4}

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3 years ago
Solve each equation. Use models if necessary. Check your solution.
morpeh [17]

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<em>Hope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em><em>.</em><em>.</em><em>.</em>

8 0
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When Marika bought her house she paid 80% of the purchase price of the house with a loan. She paid the remaining 49,400 of the p
Maurinko [17]

Let

x-----> the purchase price of the house

we know that

1) Marika paid 80\% of the purchase price of the house with a loan

2) Marika paid the remaining \$49,400 of the purchase price with her savings

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so

0.20x=49,400

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Divide by 0.20 both sides

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therefore

<u>the answer is</u>

the purchase price of the house is \$247,000

3 0
3 years ago
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