3 years ago

Which of the following graphs is described by the function given below? y = 2x2 + 6x + 3

Mathematics

1 answer:

Alex777 [14]3 years ago

5 0

Answer: Graph A

Step-by-step explanation:

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The second derivative of acos(kx)

Shkiper50 [21]

F’(x)= -akxsinkx

F’’(x)= -a(kx)^2coskx

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8 0

2 years ago

What is the value of x in this proportion? 5/6=−4x/+2 x=−2 4/5 x=−4 2/5 x=−5 1/5 x=−6 4/5

insens350 [35]

Answer:

x= -4 2/5

Step-by-step explanation:

firstly cross multiply 5/6=-4x/+2

5×+2=6×-4x

10=-24x

make x subject of formula

10/-24= ans

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6 0

3 years ago

Which is equivalent to √3/√8 when denominator is "rationalized"?

TEA [102]

Step-by-step explanation:

$\dfrac{\sqrt3}{\sqrt8}=\dfrac{\sqrt3\cdot\sqrt2}{\sqrt8\cdot\sqrt2}=\dfrac{\sqrt{3\cdot2}}{\sqrt{8\cdot2}}=\dfrac{\sqrt6}{\sqrt{16}}=\dfrac{\sqrt6}{4}$

$\sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\ \text{for}\ a\geq0\ \wedge\ b\geq0\\\\\sqrt{a}=b\iff b^2=a\ \text{for}\ a\geq0\ \wedge\ b\geq0\\\\\sqrt{16}=4\ \text{because}\ 4^2=16$