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Find all of the roots of the equation y = 3x^3 - 12x

Step 1: Remove the most obvious factor, in this case 3x. y = 3x (x² - 4) Step 2: Realize (x² - 4) is the product of two squares and can undergo completing the square to produce ...

Answered by Victoria D. • Maths tutor

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How are mitochondria adapted for their function?

Mitochondria have a double membrane structure, with an inner layer with many folds to create a high surface area. This provides more space for more metabolising proteins and therefor they are able to crea...

Answered by Emilie J. • Biology tutor

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Josie is paid £1200 per month. She is going to receive an increase of 4% in the amount she is paid. Work out how much money Josie we be paid each month after the increase.

We need to first work out what 4% of £1200 is. 1% of £1200 = £(1200/100) = £12. 1% is £12, so 4%= 4*£12 = £48. She will receive a £48 increase.Adding that on to her original amount, £1200 + £48 = £1248.Fi...

Answered by Jack B. • Maths tutor

2922 Views

Use the periodic table to write symbols for the following species: 19 protons, 20 neutrons, 19 electrons

when looking at an atom on the periodic table, we see that within the box are two numbers: one at the top and one at the bottom. the top number represents the atomic number and the bottom number represent...

Answered by Alisha I. • Chemistry tutor

3251 Views

Describe the process of inhalation (inspiration).

Inhale. Internal intercostal muscles relax. External intercostal muscles contract. Ribcage moves up and out. Diaphragm contracts and flattens. Volume in lungs increases. Pressure in lungs decreases. Air m...

Answered by Anya P. • Biology tutor

5112 Views