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hichkok12 [17]
3 years ago
10

Is .4 kilometers equal to 40,000 centimeters

Mathematics
1 answer:
DiKsa [7]3 years ago
7 0
Yes and thank you for being so active on Brainly
You might be interested in
Write an equation of the hyperbola given that the center is at (2, -3), the vertices are at (2, 3) and (2, - 9), and the foci ar
zavuch27 [327]
Check the picture below.

so, the hyperbola looks like so, clearly a = 6 from the traverse axis, and the "c" distance from the center to a focus has to be from -3±c, as aforementioned above, the tell-tale is that part, therefore, we can see that c = 2√(10).

because the hyperbola opens vertically, the fraction with the positive sign will be the one with the "y" in it, like you see it in the picture, so without further adieu,

\bf \textit{hyperbolas, vertical traverse axis }
\\\\
\cfrac{(y- k)^2}{ a^2}-\cfrac{(x- h)^2}{ b^2}=1
\qquad 
\begin{cases}
center\ ( h, k)\\
vertices\ ( h,  k\pm a)\\
c=\textit{distance from}\\
\qquad \textit{center to foci}\\
\qquad \sqrt{ a ^2 + b ^2}\\
asymptotes\quad  y= k\pm \cfrac{a}{b}(x- h)
\end{cases}\\\\
-------------------------------

\bf \begin{cases}
h=2\\
k=-3\\
a=6\\
c=2\sqrt{10}
\end{cases}\implies \cfrac{[y- (-3)]^2}{ 6^2}-\cfrac{(x- 2)^2}{ b^2}=1
\\\\\\
\cfrac{(y+3)^2}{ 36}-\cfrac{(x- 2)^2}{ b^2}=1
\\\\\\
c^2=a^2+b^2\implies (2\sqrt{10})^2=6^2+b^2\implies 2^2(\sqrt{10})^2=36+b^2
\\\\\\
4(10)=36+b^2\implies 40=36+b^2\implies 4=b^2
\\\\\\
\sqrt{4}=b\implies 2=b\\\\
-------------------------------\\\\
\cfrac{(y+3)^2}{ 36}-\cfrac{(x- 2)^2}{ 2^2}=1\implies \cfrac{(y+3)^2}{ 36}-\cfrac{(x- 2)^2}{ 4}=1

3 0
2 years ago
-
OlgaM077 [116]

Answer: D

Step-by-step explanation:

g(x)=f(x-2)=8(x-2)+1=8x-16+1=8x-15

5 0
2 years ago
Read 2 more answers
The number of books sold over the course of the four-day book fair were 190, 100, 272, and 74. Assume that samples of size 2 are
g100num [7]

Answer:

the answer is below

Step-by-step explanation:

We have the total number of possible samples = 4 * 4 = 16 (As 4 choices for each value)

in addition we have to as all sample occur with equal probability, probability of each sample = 1/16, below is samling distribution of mean

x1 x2 probabilityP(x1,x2) sample mean

190 190    1/16                 190

190 100    1/16                 145

190 272    1/16                 231

190 74    1/16                 132

100 190    1/16                 145

100 100    1/16                 100

100 272    1/16                 186

100 74    1/16                        87

272 190    1/16                 231

272 100    1/16                 186

272 272    1/16                 272

272 74    1/16                 173

74 190    1/16                 132

74 100    1/16                 87

74 272    1/16                 173

74 74    1/16                 74

Summarizing above with adding duplicate values

sample mean   probability

       74              1/16

      87               1/8

    100                1/16

    132                1/8

    145                1/8

    173                1/8

   186                1/8

   190               1/16

    231               1/8

   272               1/16

5 0
3 years ago
tom's baseball team wins 5 out every 12 games they play. If the team played 36 games, how many games did Tom's team win
atroni [7]

Answer:

15 games

Step-by-step explanation:

12X3=36 5X3=15

6 0
2 years ago
Which relationships have the same constant of proportionality between y and x as in the equation y=1/2x Choose 3 answers:
Andrew [12]

Answer:

A and B has the same constant of proportionality

Step-by-step explanation:

y \propto x

y = kx ----1

Where k is the constant of proportionality

We are supposed to find Which relationships have the same constant of proportionality between y and x as in the equation y=\frac{1}{2}x

On comparing with 1

k = \frac{1}{2}

A)6y = 3x

y = \frac{3}{6}x\\y = \frac{1}{2}x

So, this equation has the  same constant of proportionality

B)(x_1,y_1)=(2,1)\\(x_2,y_2)=(4,2)

To find the equation :

Formula : y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)

So, y - 1=\frac{2-1}{4-2}(x-2)\\y-1=\frac{1}{2}(x-2)\\y-1=\frac{1}{2}x-1\\y=\frac{1}{2}x

So, this equation has the  same constant of proportionality

C)

(x_1,y_1)=(1,2)\\(x_2,y_2)=(2,4)

To find the equation :

Formula : y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)

So, y - 2=\frac{4-2}{2-1}(x-1)\\y - 2=2(x-1)\\y - 2=2x-2\\y=2x

So, this equation do not has the same constant of proportionality

D)

(x_1,y_1)=(2,1)\\(x_2,y_2)=(3,2.5)

To find the equation :

Formula :y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)

So, y - 1=\frac{2.5-1}{3-2}(x-2)

y-1=1.5(x-2)\\y-1=1.5x-3\\y=1.5x-2

So, this equation do not has the same constant of proportionality

Hence A and B has the same constant of proportionality

3 0
3 years ago
Read 2 more answers
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