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3 years ago

Express 55 miles per hour in kilometers per hour?

Mathematics

2 answers:

Oksi-84 [34.3K]3 years ago

8 0

I searched it up it’s 88.51 km

EleoNora [17]3 years ago

4 0

55 miles per hour is 88.51 kph

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A circle has a diameter that starts

Kipish [7]

Find the distance between those points

diameter/2=radius

distance betwen (x1,y1) and (x2,y2) is
$D= \sqrt{(x2-x1)^2+(y2-y1)^2}$

given
(3,7) and (7,3)

$D= \sqrt{(7-3)^2+(3-7)^2}$
$D= \sqrt{(4)^2+(-4)^2}$
$D= \sqrt{16+16}$
$D= \sqrt{32}$
D=4√2

diameter/2=(4√2)/2=2√2

radius is 2√2

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3 years ago

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3 years ago

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Express 15 x^1/3y^1/5 using a radical

k0ka [10]

In short, to convert two fractions to have the same denominator, we simply multiply one by the denominator of the other, so in this case, we'll multiply 1/3 by 5, top and bottom, and 1/5 by 3, top and bottom, thus

$\bf a^{\frac{ n}{ m}} \implies \sqrt[ m]{a^ n} 
\qquad \qquad
\sqrt[ m]{a^ n}\implies a^{\frac{ n}{ m}}\\\\
-------------------------------$

$\bf \cfrac{15x^{\frac{1}{3}}}{y^{\frac{1}{5}}}\qquad 
\begin{cases}
\frac{1}{3}=\frac{1\cdot 5}{3\cdot 5}\\
\qquad \frac{5}{15}\\\\
\frac{1}{5}=\frac{1\cdot 3}{5\cdot 3}\\
\qquad \frac{3}{15}
\end{cases}\implies \cfrac{15x^{\frac{5}{15}}}{y^{\frac{3}{15}}}\implies 15\cdot \cfrac{x^{\frac{5}{15}}}{y^{\frac{3}{15}}}\implies 15\cdot \cfrac{\sqrt[15]{x^5}}{\sqrt[15]{y^3}}
\\\\\\
15\sqrt[15]{\frac{x^5}{y^3}}$

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3 years ago

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Reduce this algebraic fraction 27c^4d^5/9c^7d^4 ...?

Naddika [18.5K]

The answer is $\frac{3d}{ c^{3}}$

The fraction is: $\frac{27 c^{4} d^{5}}{9 c^{7} d^{4} }$
Let's rewrite it: $\frac{27 c^{4} d^{5}}{9 c^{7} d^{4} }= \frac{27}{9}*\frac{c^{4}}{c^{7}}*\frac{d^{5}}{d^{4} }$

Now, let's use the rule $\frac{ x^{a} }{ x^{b}} = x^{a-b} = \frac{1}{ x^{b-a} }$ :
$\frac{27}{9}*\frac{c^{4}}{c^{7}}*\frac{d^{5}}{d^{4} }=3* \frac{1}{c^{7-4}} * d^{5-4} =3* \frac{1}{ c^{3} } *d^{1}= \frac{3d}{ c^{3} }$

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3 years ago

Jamie has a deck of 60 sports cards, of which some are baseball cards and some are football cards. Jamie pulls out a card random

Snezhnost [94]

The number is most likely 15 because if you one recorded 3 baseball cards and 9 baseball cards it would be most reasonable to have it be 15

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3 years ago

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