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Simora [160]
3 years ago
11

If Elizabeth skates 2/3 mile in 2/9 hour how far does she skate in 1 hour?

Mathematics
1 answer:
padilas [110]3 years ago
8 0

Answer:

3 miles in a hour

Step-by-step explanation:

2/3÷2/9

=6/2

=3 miles in a hour

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More math help please im lazy ._.
FinnZ [79.3K]

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3 years ago
How to solve this?<br>\int \frac { 4 - 3 x ^ { 2 } } { ( 3 x ^ { 2 } + 4 ) ^ { 2 } } d x​
ivanzaharov [21]

\Large \mathbb{SOLUTION:}

\begin{array}{l} \displaystyle \int \dfrac{4 - 3x^2}{(3x^2 + 4)^2} dx \\ \\ = \displaystyle \int \dfrac{4 - 3x^2}{x^2\left(3x + \dfrac{4}{x}\right)^2} dx \\ \\ = \displaystyle \int \dfrac{\dfrac{4}{x^2} - 3}{\left(3x + \dfrac{4}{x}\right)^2} dx \\ \\ \text{Let }u = 3x + \dfrac{4}{x} \implies du = \left(3 - \dfrac{4}{x^2}\right)\ dx \\ \\ \text{So the integral becomes}  \\ \\ = \displaystyle -\int \dfrac{du}{u^2} \\ \\ = -\dfrac{u^{-2 + 1}}{-2 + 1} + C \\ \\ = \dfrac{1}{u} + C \\ \\ = \dfrac{1}{3x + \dfrac{4}{x}} + C \\ \\ = \boxed{\dfrac{x}{3x^2 + 4} + C}\end{array}

5 0
3 years ago
Solve for x: 3-(2x-5)&lt;-4(x+2)
andriy [413]
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3 0
3 years ago
Can u answer this? respond please
lianna [129]
$1.87 is the answer

explanation: divide $7.48 and 4 because it says per each marker and a little trick: each = divide or multiply! good luck with your school <3
8 0
2 years ago
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slega [8]
What we know: 
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10/1,000=0.01

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3 0
3 years ago
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