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2 years ago

Can someone help please!

Mathematics

1 answer:

GarryVolchara [31]2 years ago

6 0

This is for the first one

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15+25=m-45 what is the solution?

zzz [600]

The solution for 15+25=m-45 is m=85

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2 years ago

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Explorers on a planet with a thin atmosphere want to measure the acceleration of gravity at its surface. So they use a spring gu

Murljashka [212]

Answer:

The value of $g_s$ is $g_s=\frac{30}{21} \:\frac{m}{s^2}$ .

Step-by-step explanation:

We know that the position function is given by

$s(t)=30t-\frac{g_s}{2} t^2$

Velocity is defined as the rate of change of position. Therefore,

$v(t)=\frac{d}{dt}(s(t))$

So, the velocity function is

$v(t)=\frac{d}{dt}(s(t))\\\\v(t)=\frac{d}{dt}(30t-\frac{g_s}{2} t^2)\\\\\mathrm{Apply\:the\:Sum/Difference\:Rule}:\quad \left(f\pm g\right)'=f\:'\pm g'\\\\v(t)=\frac{d}{dt}\left(30t\right)-\frac{d}{dt}\left(\frac{g_s}{2}t^2\right)\\\\v(t)=30-g_st$

When a body reaches a vertical velocity of zero, this is the maximum height of the body and then gravity will take over and accelerate the object downward. Thus,

$v(t)=30-g_st=0\\\\g_s=\frac{30}{t}$

We know that the ball bearing reaches its maximum height 21 seconds after being launched (t = 21 s).

So, the value of $g_s$ is $g_s=\frac{30}{21} \:\frac{m}{s^2}$ .

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3 years ago

Is 7/10 greater or less than or equal to 2/5?

seraphim [82]

Answer:

Greater than.

Step-by-step explanation:

$\frac{2}{5} * 2 = \frac{4}{10}$

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3 years ago

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Afina-wow [57]

Answer:

The point has a high leverage

Step-by-step explanation:

The point has a high leverage as it would act as an infinitesimal point that will have a very huge/drastic impact on the fit of the model, and this impact can be seen in such ways as listed below :

Smaller coefficient of determination
Higher sum of squares error

removing this point will eliminate these drastic impact and make the correlation to be better.

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3 years ago

Write the equations of the line

Basile [38]

Look at the picture it explains the answer

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2 years ago