3 years ago

her teacher has informed her that her final answer is wrong. Explain to Jessley where she made a mistake and why

Mathematics

1 answer:

ahrayia [7]3 years ago

4 0

Answer:

Step-by-step explanation:

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skad [1K]

Answer:

x=7

Step-by-step explanation

left part + 0.006 = right part + 0.006

----> 0.1x = 0.08x+0.14

left part -0.08x =right part - 0.08x

----> 0.02x=0.14

x=7

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3 years ago

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Step-by-step explanation:

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Using the completing-the-square method, rewrite f(x) = x2 - 6x + 2 in vertex form.<br>

sp2606 [1]

Answer:

$\large\boxed{f(x)+(x-3)^2-7}$

Step-by-step explanation:

$\text{The vertex form of equation}\ y=ax^2+bx+c:\\\\y=a(x-h)^2+k\\\\\text{We have the equation:}\\\\f(x)=x^2-6x+2=x^2-2(x)(3)+1=x^2-2(x)(3)+3^2-3^2+2\\\\\text{Use}\ (a-b)^2=a^2-2ab+b^2\to x^2-2(x)(3)+3^2=(x-3)^2\\\\f(x)=(x-3)^2-9+2=(x-3)^2-7$

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3 years ago