Which would be the best sample for

Mathematics

2 answers:

vesna_86 [32]2 years ago

4 0

B because it’s a random sample and it’s not biased

Ksivusya [100]2 years ago

3 0

Answer:

It would either be B or C. More than likely it would be B.

Step-by-step explanation:

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F(x) = -2x, x<2<br> x2 - 4x + 1, x>2<br> 4

Sidana [21]

Answer:

Step-by-step explanation:

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3 years ago

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What is the missing value of 3/10=x/20

svet-max [94.6K]

X would equal 6 because 3/10=6/20. And 6/20 simplifies to 3/10

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2 years ago

What is 87.65•26.889=

yuradex [85]

Answer:

2,356.82085‬

Step-by-step explanation:

87.65*26.889= 2,356.82085

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3 years ago

Find the parabola with equation y = ax^2 + bx whose tangent line at (2, 4) has equation y = 8x − 12.

MrRissso [65]

$\bf y=ax^2+bx\implies \cfrac{dy}{dx}=2ax+b$

now, we know the tangent line at (2,4) is y = 8x - 12, now, that's already in slope-intercept form, so, the slope of that tangent at (2,4) is "8" then.

now, that means when x = 2, the slope is 8, so let's use that.

$\bf \left. \cfrac{dy}{dx} \right|_{x=2}\implies 2a(2)+b=\stackrel{\textit{from tangent equation}}{8}\implies 4a+b=8
\\\\\\
4a=8-b\implies a=\cfrac{8-b}{4}\implies \boxed{a=2-\cfrac{b}{4}}\\\\
-------------------------------\\\\
\begin{cases}
x=2\\
y=4\\\\
a=2-\cfrac{b}{4}
\end{cases}\implies \stackrel{y = ax^2+bx}{4=\left( \boxed{2-\frac{b}{4}} \right)(2)^2+b(2)}\implies 4=8-b+2b
\\\\\\
\boxed{-4=b}\qquad thus\qquad a=2-\cfrac{-4}{4}\implies \boxed{a=3}\\\\
-------------------------------\\\\
y=3x^2-4x$

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2 years ago

Please I need help fast please help me

Effectus [21]

Answer: 0-o uhhhh 0-o

uhhhh0-o

Step-by-step explanation:

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2 years ago