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2 years ago

Can you please help me with this question

Mathematics

1 answer:

Phantasy [73]2 years ago

8 0

Answer:

The answer is 0.6

Step-by-step explanation:

you can change the mixed fraction into decimal and u can calculate easily

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What is m∠A ?<br> Please see attachment <br> (The Triangle Sum Theorem)

andrey2020 [161]

x + (3x+13) +(x-8) =180

5x +5 = 180

x = 175 /5 = 35

Angle A = 3(35)+13 = 118 degrees

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2 years ago

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kifflom [539]

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2 years ago

When the level of confidence and sample standard deviation remain the same, a confidence interval for a population mean based on

miskamm [114]

Answer:

A narrower than

Step-by-step explanation:

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3 years ago

Best tip for Maths test to figure out challenging problems

padilas [110]

First solve the easier questions which can be solved in very low time.
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2 years ago

When the velocity v of an object is very large, the magnitude of the force due to air resistance is proportional to v squared w

Sati [7]

Answer:

Step-by-step explanation:

The model fo the shell is given by the following equation of equilibrium:

$\Sigma F = -b\cdot v^{2} - m\cdot g = m\cdot \frac{dv}{dt}$

This first-order differential equation has separable variables, which are cleared herein:

$\int\limits^t_{0\,s} \, dt = -\frac{m}{b} \int\limits^{0\,\frac{m}{s} }_{600\,\frac{m}{s} } {\frac{1}{ v^{2}+\frac{m}{b}\cdot g } } \, dv$

The solution of this integral is:

$t = -\frac{m}{2b}\cdot \left[\tan^{-1} \left(\frac{v}{\sqrt{\frac{m\cdot g}{b} } }\right) - \tan^{-1} \left(\frac{600}{\sqrt{\frac{m\cdot g}{b} } }\right)\right]$

$\tan^{-1} \left(\frac{v}{\sqrt{\frac{m\cdot g}{b} } } \right)=-\frac{2\cdot b\cdot t}{m} + \tan^{-1}\left(\frac{600}{\sqrt{\frac{m\cdot g}{b} } } \right)$

$\frac{v}{\sqrt{\frac{m\cdot g}{b} } }=\tan \left[-\frac{2\cdot b\cdot t}{m} + \tan^{-1}\left(\frac{600}{\sqrt{\frac{m\cdot g}{b} } } \right)\right]$

$v = \sqrt{\frac{m\cdot g}{b} } \left [\frac{\tan \left(-\frac{2\cdot b \cdot t}{m} \right)+ \left(\frac{600}{\sqrt{\frac{m\cdot g}{b} } } \right)}{1 - \left(\frac{600}{\sqrt{\frac{m\cdot g}{b} } } \right)\cdot \tan \left(-\frac{2\cdot b \cdot t}{m} \right) }\right]$

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2 years ago

Can you please help me with this question ​

Can you please help me with this question