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Describe blood flow through the heart

The heart is made of cardiac muscle and is split into 4 chambers known as atria and ventricles.Low pressure, deoxygenated blood from the tissue enters the right atrium via the superior and inferior vena cava...
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Answered by Claire H. • Biology tutor
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Expand and simplify (x − 4)(2x + 3y)^2

Rewrite (x − 4)(2x + 3y) 2 as (x - 4)(2x + 3y)(2x + 3y) Multiply out the first two brackets to give -(2x 2 + 3xy - 8x 2 - 12y)(2x + 3y) Multiply out the remaining brackets4x 3 + 6x 2 y - 16x 2 - 24xy + 24xy ...
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Answered by Henry K. • Maths tutor
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Caesaris uxor maritum suum multis cum precibus oravit ne in senatum eo die iniret. ille, tamen, cum timeret ne ignavus haberetur, consilium eius neglegere constituit. domo igitur egressus, Curiam intravit ubi a senatorum multitudine statim circumventus es

Translation: The wife of Caesar begged her husband with many prayers not to go into the senate on this day. That man however, since he feared that he would appear cowardly, decided to neglect the advice of h...
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Answered by Charli K. • Latin tutor
3334 Views

Find the values of x and y when 3x+4y=18 and 4x+2y=14

Label equations: (a) 3x+4y=18(b) 4x+2y=14We need to be able to cancel out either the x's or the y's. The simplest choice is to double (b) so that we can cancel out the y's.2 x (b) : 8x+4y=28 (Give this a new...
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Answered by Rosie E. • Maths tutor
6572 Views

Solve the simultaneous equations 3x + 2y = 12 and 10y = 7x + 16

First we need to rearrange both equations into the form ax + by = c (where a, b and c are the integers). We can label these 1. and 2.We then have:3x + 2y = 12 1.7x -10y = -16 2.In order to find the x value, ...
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Answered by Anjali A. • Maths tutor
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