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balu736 [363]
3 years ago
5

2.8+7.2 repeating answer as a decimal

Mathematics
2 answers:
juin [17]3 years ago
4 0
2.8+7.2=10 all you had to do was just add
SVEN [57.7K]3 years ago
4 0

Answer:

10.022

Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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7 0
3 years ago
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Solutions for 2x^2+18x=20, worth a TON, please only 100% answers ! Thank u !
victus00 [196]

Answer:

The solution of the given quadratic equation is 1 and (-10).

Step-by-step explanation:

2x^2+18x=20

x^2+9x=\frac{20}{2}

x^2+9x-10=0

ax^2+bx+c=0

Solving equation by quadratic formula:

Here , a = 1,b = 9, c = (-10)

D=b^2-4ac=(9)^2-4(1)(-10)=121

x=\frac{-b+{\sqrt{D}}}{2a}=\frac{(-9)+\sqrt{121}}{2(1)}=1

x=\frac{-b-{\sqrt{D}}}{2a}=\frac{(-9)-\sqrt{121}}{2(1)}=(-10)

The solution of the given quadratic equation is 1 and (-10).

5 0
3 years ago
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Step-by-step explanation:

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