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aleksklad [387]

3 years ago

11

Mario has a number cube with sides numbered 1 through 6. He rolls the number cube twice. He rolls an odd number on the first rol

l.
What is the probability that Mario will roll an even number on the second roll?

1. 0

2. 1/4

3. 1/3

4. 1/2

5. 1

1 answer:

Anettt [7]3 years ago

7 0

1/2 because there are 3 odd numbers on a number cube and 6 numbers in total and 3/6 simplified is 1/2

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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:

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

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

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

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

4 0

3 years ago

WILL MARK BRAINLYISTwhich shows the correct substitution of the values a b and c from the equation 0=-3x^2-2x+6

skad [1K]

Answer:

its a :)

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Help me on 8 and 9 plz

klasskru [66]

8. first 12 bags for 54m^{2} [/tex]
54 ÷ 12 = 4.5
we know: 1 bag for 4.5m^2
36 ÷ 4.5 = 8
so 36m^2 we must use 8 bags

9. $\frac{5}{8}$ x2 =5x2/8= 10/8 = 5/4 = 1.25

hope it helped you

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a_sh-v [17]

Answer:

Step-by-step explanation:

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