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Elan Coil [88]
2 years ago
15

Quadratic formula of -2x^2+x+8=0

Mathematics
1 answer:
Vikentia [17]2 years ago
6 0

Answer:

x= 1/4 +(-1/4) √65 or x= 1/4 + 1/4 √65

Step-by-step explanation:

x=  −b±√b2−4ac /2a

x= −(1)±√(1)2−4(−2)(8) /2(−2)

x= −1±√65 /−4

x= 1/4 +(-1/4) √65 or x= 1/4 + 1/4 √65


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Solve the proportion. i need help.<br> x+3/6=8/3<br><br> x=?
stellarik [79]

Answer:

x = 2 1/6 (13/6)

Step-by-step explanation:

to solve the proportion you must first find the LCF or least common factor

that is 6

so turn 8/3 into 16/6 by multiplying it by 2/2

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Lesechka [4]
Using this equation, f(3) = 23.

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f(x) = 2x^2 + 5sqrt(x - 2) 

Now place 3 in for each x. 

f(3) = 2(3)^2 + 5sqrt(3 - 2)

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Do the subtraction inside of the parenthesis. 

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Multiply. 

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And add. 

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3 years ago
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Answer:

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Step-by-step explanation:

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C

length= 10 cm
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