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Find the points where the curve given by: y = x^2 - 4x -12, and the line given by y = 2x - 12

They intersect at (0, -12) and (6, 0)

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John invests £8000 at compound interest rate of 1.5% per year. He wants to earn more than £2000 in interest. What is the LEAST time in WHOLE years that this will take?

Step 1) Create the formula: 8000 x 1.015ⁿStep 2) Equate to the target value: 8000 x 1.015ⁿ = ~~2000~~ 10000 (Common mistake is to use target of £2000 ...

Answered by Hamza H. • Maths tutor

3532 Views

0.0960g of Magnesium was reacted with 25cm^3 of HCL of 0.4mol/dm^3 concentration. Calculate the moles of each one and determine which one is in excess

Equations to usemoles = mass/Mrmoles= concentration*volumeAr of Magnesium = 12 Moles= 0.096/12 Moles=0.008Moles of HCL = 25/1000 x 0.4=0.1Therefore HCL is in excess

Answered by Tom G. • Chemistry tutor

4470 Views

How does ADH help control water loss in the body?

ADH (anti-diuretic hormone) is a hormone that is released by the brain. It is released if there is too much water loss via the kidneys, if this occurs, then the pituitary gland releases ADH into the blood...

Answered by Alvin C. • Biology tutor

9849 Views

The teacher quickly inverts the can containing boiling water into a bowl of cold water, as shown in the diagram. When the can is inverted in the cold water, the can collapses. Use ideas about particles and pressure to explain why the can collapses.

Initially the average kinetic energy of the trapped air within the can is much higher the surrounding body of air. However, when immersed in the cold water, there is a significant decrease in the average ...

Answered by Zubin M. • Physics tutor

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