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Jack has 20 sweets. Will also has 20 sweets. Jack gives Will x sweets. Jack then eats 5 of his sweets. Will then eats half of his sweets. Write expressions for the number of sweets Jack and Will now have.

They both start with 20 sweets. To get the total number of sweets that Jack has, you need to take away x because that is the amount that he gives to will. Jack then eats 5 of his sweets so you need to take a...
LM
Answered by Lucy M. • Maths tutor
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Describe the electrical activity that occurs during the cardiac cycle?

The cardiac cycle, by convention, is considered to begin with depolarisation of the sino-atrial node (SAN). This depolarisation spreads across the two atria, causing the right and left atria to contract. The...
LK
Answered by Luke K. • Biology tutor
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Describe how an atheroma may lead to a myocardial infarction.

An atheroma is the deposition of fatty material in the innermost lining of an artery (caused by the process of 'atherosclerosis'). Atheromas have a tendency to rupture and this increases the likelihood of th...
JW
Answered by Jovian W. • Biology tutor
9278 Views

La vida nuestra es cada vez más rápida, lo que es perjudicial para nuestra salud. Desarrolla el tema

No puede haber ninguna duda de que la velocidad de la vida moderna está beneficiando nuestra salud. Ser capaz de completar varias tareas en un período de tiempo más corto nos da más tiempo para gastar hacien...
CD
Answered by Charlie D. • Spanish tutor
3004 Views

Supposing y = arcsin(x), find dy/dx

Suppose: y = arcsin(x) Then, x = sin(y) And, dx/dy = cos(y) ----- (1) Using: dy/dx = 1/(dx/dy); Thus 1 becomes: dy/dx = 1/cos(y) ------ (2) Using: sin^2(y) + cos^2(y) = 1; We can rearrange 2 to: dy/dx = 1/sq...
JN
Answered by James N. • Maths tutor
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