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How many chambers does the heart have and what are their functions?

The heart has 4 chambers: right atrium, left atrium, right ventricle and left ventricle.Right atrium - pumps blood from the Vena Cava to the right ventricle.Right ventricle - pumps blood to the lungs.Left at...
SY
11811 Views

Solve: x^2 + 2x - 3 = 0

(x 2 +2x - 3) = 0 We need to find 2 numbers that multiply to make -3 and add to make 2. Once we have found them we can use them to find the solutions to the quadratic. Answer = (x+3)(x-1) = 0 therefore x = -...
JB
Answered by Joshua B. • Maths tutor
3156 Views

How do I do algebra when there is an x on both sides?

If you are trying to work out what x is, then we need to end up with something that looks like: [ x = ... ] On one side we have just 'x' and on the other side we have no ' x 's. So x = 44 is already solved a...
RB
Answered by Robbie B. • Maths tutor
3409 Views

Please explain the short term effects of physical activity on the body.

Physical Activity can have a number of effects that occur immediately. The first of which being an increase in heart rate to provide working muscles with sufficient oxygen to avoid the building of lactic aci...
JS
2109 Views

Differentiate y = 2x^4 + 11x^2 - 5 with respect to x

There are two things to understand with this question: 'differentiate' and 'with respect to x'we differentiate when we need to find how quickly something changes, which in maths usually means the gradient of...
KD
Answered by Kieran D. • Maths tutor
2939 Views