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2 years ago

Please take 50 points please help me please

Physics

1 answer:

ch4aika [34]2 years ago

6 0

I am using a calculator for this question so hopefully this helps + I added working out just in case.

a) mean - 124 (add them all together then divide by 25)

b) standard deviation - 7.776888838 (7.76 to d.p)

c) the person might have eaten foods that increase or decrease the BP so every time they took their blood pressure, it might not have been done as the same routine as others (if this makes sense). Also, some blood pressures are lower than others like for example some might go down to 110 but others go all the way up to like 132, does why I said that they might have eaten food or done activites that increases the blood pressure.

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3 years ago

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Calculate the velocity if a car traveled 4000 meters, and did it in 400 seconds. (v = d / t)

Otrada [13]

Hello!!

For calculate the velocity let's applicate the formula:

$\boxed{d=v*t}$

$\textbf{Being:}$

$\sqrt{}$ d = Distance = 4000 m

$\sqrt{}$ v = Velocity = ?

$\sqrt{}$ t = Time = 400 s

⇒ $\text{Then let's \textbf{replace it according} we information:}$

$4000 \ m = v * 400 \ s$

⇒ $\text{Let's resolve it: }$

$v = 4000 \ m / 400 \ s$

$v = 10 \ m / s$

$\textbf{Result:}\\\text{The velocity is \textbf{10 m/s}}$

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3 years ago

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• How does AC work?

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DC only flows in one direction and is constant.

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DC is used typically inside of devices, as it sends a certain amount of electricity through the wires.

Nicolas Tesla, was ripped off by Edison to replace his DC stations with AC instead. ^^

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3 years ago

Please take 50 points please help me please ​

Please take 50 points please help me please