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Solve this pair of simultaneous equations. 5x + 2y = 20 x + 4y= 13

One way to solve simultaneous equations is to express x in terms of y (or vice versa) and solve your new equation to find one of the values. You can then substitute this into your equation to work out the ot...
NB
Answered by Ned B. • Maths tutor
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Simplify (3 √(5))^2

In a question asking us to simplify, we know that our task is to reduce the number of terms presented as far as possible. We should begin inside the brackets by attempting to express both our numbers, 3 and ...
HW
Answered by Hugh W. • Maths tutor
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Describe the path of a red blood cell through the heart

Red blood cell arrives from the inferior vena cava into right atrium before it passes through the tricuspid valve into right ventricle. It then passes through the pulmonary valve into pulmonary artery before...
RW
Answered by Robert W. • Biology tutor
76049 Views

Questions are very long and multiple choice.

Difficult to write a practice question.
TD
Answered by Tutor96718 D. • UCAT tutor
2028 Views

Define the term relative isotopic mass. (2 Marks)

Mass of the isotope/atom compared to 1/12th the mass of an atom of Carbon 12 (12C)
TD
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