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Mathematics

1 answer:

alexdok [17]2 years ago

3 0

Answer:

That would be the 3rd explanation, the plane has 4 points.

Step-by-step explanation:

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The formula for the surface area of a cylinder is A=2πr(r+h).Find h if A=80π and r=5.

lesya [120]

A=2πr(r+h)
80π=2π(5)(5+h)
80π=10π(5+h)
80π=50π + 10πh
30π=10πh
3=h

3 0

3 years ago

PLEASE HELP ASAP FIND THE MEASUREMENT QP 20 POINTS

ahrayia [7]

Answer:

a^2+b^2=c^2

a^2+b^2=8^2

a^2+b^2=64

32+32=64

5.66^2+5.66^2=8^2

Step-by-step explanation:

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2 years ago

Evaluate the line integral, where c is the given curve. c y3 ds,

postnew [5]

Parameterizing $\mathcal C$ by

$\mathbf r(t)=(t^3,t)$

with $0\le t\le2$ , we have

$\mathrm ds=\|\mathbf r'(t)\|\,\mathrm dt=\sqrt{(3t^2)^2+1^2}\,\mathrm dt=\sqrt{9t^4+1}\,\mathrm dt$

So

$\displaystyle\int_{\mathcal C}y^3\,\mathrm ds=\int_{t=0}^{t=2}t^3\sqrt{9t^4+1}\,\mathrm dt$
$=\displaystyle\frac1{36}\int_0^236t^3\sqrt{9t^4+1}\,\mathrm dt$
$=\displaystyle\frac1{36}\int_{u=1}^{u=145}\sqrt u\,\mathrm du$
$=\dfrac{145^{3/2}-1}{54}$

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3 years ago

Six different second-year medical students at Bellevue Hospital measured the blood pressure of the same person. The systolic re

mixer [17]

Answer: range= 26, variance= 80 and standard deviation= 8.94

Step-by-step explanation:

Range = highest - lowest

Range = 146 - 120

Range= 26

Let m be mean

M=mean=sum/n

Mean=(120+134+146+127+138+133) / 6