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All tickets for a concert are the same price. Ayo and Rachel pay £63 total for some tickets. Ayo pays £24.50 for 7 tickets. How many tickets does Rachel buy?

24.50/7 = £3.50 - price of 1 ticket 63/3.50 = 18 - number of tickets bought total 18 - 7 = 11
SJ
Answered by Sasha J. • Maths tutor
3589 Views

Why is it that Gonorrhoea can be treated with an antibiotic, but HIV cannot?

Gonorrhoea is caused by a bacteria whereas HIV is a virus. Antibiotics are only effective on bacterial diseases, but do not treat viruses as they are found inside the host cell.
SJ
Answered by Sasha J. • Biology tutor
3944 Views

Describe how oxygen in the air reaches the capillaries surrounding the alveoli in the lungs.

Oxygen moves down the trachea, into the bronchi and into the smaller bronchioles, down a pressure gradient. Once the oxygen reaches the alveoli it moves down a diffusion gradient across the alveolar epitheli...
SJ
Answered by Sasha J. • Biology tutor
8836 Views

How do I simplify an equation?

Lets take this as an example: Simplify 5a - (2a + 6) To 'simplify an equation' means to put it at its most basic form To make it easier for us, we can place a 1 infront of the bracket, so we know what we are...
LG
Answered by Laura G. • Maths tutor
12028 Views

State the meaning of the term first ionisation energy

Energy (or enthalpy) needed to remove one electron from one atom.
AE
Answered by Azobir E. • Chemistry tutor
2471 Views