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4 years ago

- Rachel earned $54.79 last week. Morgan earned $50.23. About how much more did Rachel earn?

Mathematics

2 answers:

katovenus [111]4 years ago

6 0

Answer:

Step-by-step explanation:

4.56 $

Sergeu [11.5K]4 years ago

6 0

Rachel earned $4.56 more than Morgan last week

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KonstantinChe [14]

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3 years ago

Evaluate W - X if w = 18 and x = 6.<br> Giving BRIANLIEST

xenn [34]

Answer:

Step-by-step explanation:

18 -6

Hope that this helps you and have a great day :)

5 0

3 years ago

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lutik1710 [3]

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Because that is the right answer

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3 years ago

Read 2 more answers

And I’m back lol. Or did I never leave to begin with?-

Marianna [84]

Answer:

61 is ur answer

Step-by-step explanation:

Since this was a 90 degree angle you would just subtract 29 from the 90 degrees and get your answer.

7 0

3 years ago

Water is added to a cylindrical tank of radius 5 m and height of 10 m at a rate of 100 L/min. Find the rate of change of the wat

nirvana33 [79]

Answer:

$V = \pi r^2 h$

For this case we know that $r=5m$ represent the radius, $h = 10m$ the height and the rate given is:

$\frac{dV}{dt}= \frac{100 L}{min}$

$Q = 100 \frac{L}{min} *\frac{1m^3}{1000L}= 0.1 \frac{m^3}{min}$

And replacing we got:

$\frac{dh}{dt}=\frac{0.1 m^3/min}{\pi (5m)^2}= 0.0012732 \frac{m}{min}$

And that represent $0.127 \frac{cm}{min}$

Step-by-step explanation:

For a tank similar to a cylinder the volume is given by:

$V = \pi r^2 h$

For this case we know that $r=5m$ represent the radius, $h = 10m$ the height and the rate given is:

$\frac{dV}{dt}= \frac{100 L}{min}$

For this case we want to find the rate of change of the water level when h =6m so then we can derivate the formula for the volume and we got:

$\frac{dV}{dt}= \pi r^2 \frac{dh}{dt}$

And solving for $\frac{dh}{dt}$ we got:

$\frac{dh}{dt}= \frac{\frac{dV}{dt}}{\pi r^2}$

We need to convert the rate given into m^3/min and we got:

$Q = 100 \frac{L}{min} *\frac{1m^3}{1000L}= 0.1 \frac{m^3}{min}$

And replacing we got:

$\frac{dh}{dt}=\frac{0.1 m^3/min}{\pi (5m)^2}= 0.0012732 \frac{m}{min}$

And that represent $0.127 \frac{cm}{min}$

5 0

4 years ago

- Rachel earned $54.79 last week. Morgan earned $50.23. About how much more did Rachel earn?​

- Rachel earned $54.79 last week. Morgan earned $50.23. About how much more did Rachel earn?