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3 years ago

What is the vertex of the parabola graphed below?

Mathematics

2 answers:

Shtirlitz [24]3 years ago

8 0

Answer:

A. (3,2)

Step-by-step explanation:

The vertex is the point where the axis of symmetry crosses -- in this case, our vertex is a maximum -- since a value, or rate of change, is negative.

dmitriy555 [2]3 years ago

7 0

Answer:

(3,2)

Step-by-step explanation:

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What is 1.5 m - 5 cm ?

Alenkasestr [34]

Answer:

1.45 m

Step-by-step explanation:

Convert 1.5 metre into cm

1.5 metre =150 center meters

150 cm -5=145

145 into metres is 1.45 m

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3 years ago

Jade had $100 yesterday. Today she earns d dollars for babysitting. She now has $148. Write an equation to match how much money

ELEN [110]

100 + 48=148 so that means she got 48 dollars for babysitting

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3 years ago

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Why is 560-500 over 500 multiplied by 100?

Lady_Fox [76]

Answer:

Step-by-step explanation:

560-500=60

60/500*100=12

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3 years ago

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A random variable X follows the uniform distribution with a lower limit of 670 and an upper limit of 750.a. Calculate the mean a

DENIUS [597]

You can compute both the mean and second moment directly using the density function; in this case, it's

$f_X(x)=\begin{cases}\frac1{750-670}=\frac1{80}&\text{for }670\le x\le750\\0&\text{otherwise}\end{cases}$

Then the mean (first moment) is

$E[X]=\displaystyle\int_{-\infty}^\infty x\,f_X(x)\,\mathrm dx=\frac1{80}\int_{670}^{750}x\,\mathrm dx=710$

and the second moment is

$E[X^2]=\displaystyle\int_{-\infty}^\infty x^2\,f_X(x)\,\mathrm dx=\frac1{80}\int_{670}^{750}x^2\,\mathrm dx=\frac{1,513,900}3$

The second moment is useful in finding the variance, which is given by

$V[X]=E[(X-E[X])^2]=E[X^2]-E[X]^2=\dfrac{1,513,900}3-710^2=\dfrac{1600}3$

You get the standard deviation by taking the square root of the variance, and so

$\sqrt{V[X]}=\sqrt{\dfrac{1600}3}\approx23.09$

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3 years ago

Please help Find f(1/3) if f(n) = 3n.

kaheart [24]

Answer:

Step-by-step explanation:

f(n) = 3n

f(1/3)= 3*(1/3)=1

f(1/3)=1

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3 years ago

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