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Explain the stages of the cardiac cycle

The cardiac cycle consists of series of chamber systole and diastole. Systole is the name given to a period when cardiac muscle contract to cause blood ejection from the respective chamber to another. Dia...

AB
16114 Views

Paul organised an event for a charity. Each ticket for the event cost £19.95 Paul sold 395 tickets. Paul paid costs of £6000 He gave all money left to the charity. (a) Work out an estimate for the amount of money Paul gave to the charity.

This question asks us to estimate the amount of money Paul gave to Charity. 

  1. To work out an estimate we must start by rounding 
    PP
    Answered by Priti P. • Maths tutor
    16532 Views

Amy earns £6 for every hour she works Monday to Friday. She earns £8 for every hour she works on Saturday. One week Amy worked for 5 hours on Saturday - she earned £130 that week. How many hours did she work from Monday to Friday?

Amy worked for 5 hours on Saturday so she earned £8 x 5 = £40 on that day.

She earned £130 in total so we know she earned £130 - £40 = £90 working from Monday to F...

HM
Answered by Hamza M. • Maths tutor
4631 Views

A cylinder has a circular face with a diameter of 10cm, and a body of length 30cm. Calculate the volume of the cylinder.

First recognise that the diameter is 10cm so the radius of the circle must be 5cm.

Next use the formula for the area of a circle, πr2, to work out the area of the circul...

HM
Answered by Hamza M. • Maths tutor
6428 Views

Calculate the value of both x and y using the following 2 equations: 3x - 2y = 12 (1) and x - y = 3 (2)

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