Decrease £15890.23 by 16.5% Give your answer rounded to 2 DP.

Mathematics

1 answer:

just olya [345]2 years ago

8 0

Answer:

£13,268.34

Step-by-step explanation:

16.5% of £15890.23

= 16.5/100 × £15890.23

= 0.165 × £15890.23

= £2,621.88795

Therefore,

£15890.23 - £2,621.88795

= £13,268.34205

Approximate to 2 decimal place

= £13,268.34

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Poiseuille's Law states that the volume, V, of blood flowing through an artery in a unit of time at a fixed pressure is directly

eimsori [14]

Answer:

11.58%

Step-by-step explanation:

The initial volume if blood flowing through the artery is given by

$V=kr^4$

To achieve a new volume of 155% (55% increase) of the initial volume, the new radius must be:

$V'= 1.55V\\1.55V=k(r')^4\\1.55kr^4 = k(r')^4\\(\sqrt[4]{1.55}*r)^4=(r')^4 \\(1.1158*r)^4=(r')^4 \\r'=1.1158*r$

Since the new radius is 1.1158 times larger than the initial radius, the percentage increased is:

$I=(1.1158 - 1)*100\%\\I= 11.58\%$

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2 years ago

The velocity v of blood that flows in a blood vessel with radius r and length ℓ at a distance r from the central axis is v(r) =

pogonyaev

$v(r)=4P\eta\ell(R^2-r^2)$

(assuming $R$ is the radius of the vessel, and that $0\le r\le R$ )

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