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2 years ago

F(a)=a^3-10a^2+28a-17 at a=6

Mathematics

1 answer:

AfilCa [17]2 years ago

3 0

Answer:

727

Step-by-step explanation:

6^3-106^2=216+360=576+168=744-17=727

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3a-2b=50, 2a+3b=100 what does a equal and what does b equal?

harina [27]

A = (350/13) and B = (400/-13)

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2 years ago

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Y = -2/3x + 4

kari74 [83]

Answer:

(-4, 6.667) x=-4 y=6.667

I hope this helps!

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4 years ago

Please help me!

slava [35]

1/6·30=5
so your answer is b)5

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3 years ago

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Solve the rational equation: 2x/x-4-2x-5/x^2-10x+24=-3/x-6

jek_recluse [69]

Answer:

D. X=6.08, x=-0.58

Step-by-step explanation:

Given the rational expression

$\frac{2x}{x-4}-\frac{2x-5}{x^2-10x+24} = \frac{-3}{x-6}\\\frac{2x}{x-4}-\frac{2x-5}{x^2-4x-6x+24} = \frac{-3}{x-6}\\\frac{2x}{x-4}-\frac{2x-5}{x(x-4)-6(x-4)} = \frac{-3}{x-6}\\ \\\frac{2x}{x-4}-\frac{2x-5}{(x-4)(x-6)} = \frac{-3}{x-6}\\Rerrange;\\\frac{2x-5}{(x-4)(x-6)} = \frac{2x}{x-4}+ \frac{3}{x-6}\\\frac{2x-5}{(x-4)(x-6)} = \frac{2x(x-6)+3(x-4))}{(x-4)(x-6)}\\$

Cancel out the denominator on both sides

$2x-5 = 2x(x-6)+3(x-4)\\Expand\\2x-5 =2x^2-12x+3x-12\\2x-5 = 2x^2-9x-12\\Equate \ to \ zero\\2x^2-9x-12-2x+5 = 0\\2x^2-11x - 7 = 0\\$

Factorize

$x = -(-11)\pm\frac{\sqrt{(-11)^2-4(2)(-7)} }{2(2)}\\x = 11\pm\frac{\sqrt{121+56} }{4}\\x = 11\pm\frac{\sqrt{177} }{4}\\x = 11\pm\frac{13.3 }{4}\\x = \frac{11+13.3}{4} \ and \ x = \frac{11-13.3}{4} \\x = 6.08 \ and \ - 0.58$

Hence the required solution is X=6.08 and -0.58

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3 years ago

A farmer harvested 21 1/4

Oxana [17]

Answer:

and sold it for 26 rupesz m*********d

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3 years ago