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3 years ago

Helppppppppppppppppppppppp meeeeeeee

Mathematics

2 answers:

butalik [34]3 years ago

6 0

A) would be correct

pishuonlain [190]3 years ago

3 0

Answer:

A I think

Step-by-step explanation:

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Hi...I am taking pre calculus and I'm reallyo lost here..can someone help me?

Karolina [17]

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4 years ago

What is 28:36 in simplest form

xeze [42]

It would be 7:9 because if you divide each side by 4 then you can get it in simplest form

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3 years ago

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The sum of nine-tenths and g is two-thirds solve for g

Naya [18.7K]

Answer:

- 7/30

Step-by-step explanation:

9/10 + g = 2/3

So subtract 9/10 from both sides of the equation to get g = -7/30

Thank me later :D

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3 years ago

The rate of change of the volume of a snowball that is melting is proportional to the surface area of the snowball. Suppose the

Alisiya [41]

Answer:

According to the passage, we have the next equation:

$\frac{dV}{dt} = \frac{4}{3}\pi*3*r^{2}*\frac{dr}{dt} = K*(4\pi*r^{2} )$

where "K" is a proportional constant

Leaving at the end with the next equation:

$\frac{dr}{dt} = K$

Integrating the equation, we have:

$r=K*t+C$

where "C" is a constant

Then, we have the 2 conditions for the problem:

1) t=0 → r=10

Replacing in the equation, we have C = 10

2) t=5 → r=8

Replacing in the equation, we have K = -0.4

Finally, the time which the snowball will be completely melted will be when r = 0. So replacing in the equation

$0=-0.4*t+10$

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3 years ago

Csc^3x-csc^2x-cscx+1=cot^2x(cscx-1)

belka [17]

Verify the identity:

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3 years ago

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